$490,000,000


                                  ICG SERVICES, INC.


                            SENIOR DISCOUNT NOTES DUE 2008


                                 PLACEMENT AGREEMENT









          February 9, 1998


     

                                                           February 9, 1998


          Morgan Stanley & Co. Incorporated
          1585 Broadway
          New York, New York  10036

          Dear Sirs and Mesdames:

                    ICG Services, Inc., a Delaware corporation (the
          "COMPANY"), proposes to issue and sell to you (the "PLACEMENT
          AGENT") $490,000,000 aggregate principal amount at maturity of
          10% Senior Discount Notes due 2008 of the Company (the
          "SECURITIES") issued pursuant to the provisions of an Indenture
          to be dated as of February 12, 1998 (the "INDENTURE") among the
          Company and Norwest Bank Colorado, National Association, trustee
          (in such capacity, the "TRUSTEE").

                    The Securities will be offered without being registered
          under the Securities Act of 1933, as amended (the "SECURITIES
          ACT"), to qualified institutional buyers in compliance with the
          exemption from registration provided by Rule 144A under the
          Securities Act, in offshore transactions in reliance on
          Regulation S under the Securities Act ("REGULATION S") and to
          institutional accredited investors (as defined in Rule 501(a)(1),
          (2), (3) or (7) under the Securities Act) that deliver a letter
          in the form annexed to the Final Memorandum (as defined below).

                    The Placement Agent and its direct and indirect
          transferees will be entitled to the benefits of a Registration
          Rights Agreement to be dated the Closing Date (as defined below)
          and to be substantially in the form attached hereto as Exhibit A
          (the "REGISTRATION RIGHTS AGREEMENT").

                    In connection with the sale of the Securities, the
          Company has prepared a preliminary offering memorandum (the
          "PRELIMINARY MEMORANDUM") and will prepare a final offering
          memorandum (the "FINAL MEMORANDUM" and, with the Preliminary
          Memorandum, each a "MEMORANDUM") including a description of the
          terms of the Securities, the terms of the offering and a
          description of the Company. 

                    1.   Representations and Warranties of the Company. 
          The Company represents and warrants to, and agrees with, you
          that:

                    (a)  The Preliminary Memorandum does not contain and
               the Final Memorandum, in the form used by the Placement
               Agent to confirm sales and on the Closing Date, will not
               contain any untrue statement of a material fact or omit to
               state a material fact necessary to make the statements
               therein, in the light of the circumstances under which they
               were made, not misleading, except that the representations
               and warranties set forth in this paragraph do not apply to
               statements or omissions in either Memorandum based upon
               information relating to the Placement Agent furnished to the
               Company in writing by the Placement Agent expressly for use
               therein.

                    (b)  The Company has been duly incorporated, is validly
               existing as a corporation in good standing under the laws of
               the State of Delaware, has the corporate power and authority
               to own its property and to conduct its business as described
               in each Memorandum and is duly qualified to transact
               business and is in good standing in each jurisdiction in
               which the conduct of its business or its ownership or
               leasing of property requires such qualification, except to
               the extent that the failure to be so qualified or be in good
               standing could not reasonably be expected to have a material
               adverse effect on the Company and its subsidiaries, taken as
               a whole.

                    (c)  Each subsidiary of the Company has been duly
               incorporated, is validly existing as a corporation in good
               standing under the laws of the jurisdiction of its
               incorporation, has the corporate power and authority to own
               its property and to conduct its business as described in
               each Memorandum and is duly qualified to transact business
               and is in good standing in each jurisdiction in which the
               conduct of its business or its ownership or leasing of
               property requires such qualification, except to the extent
               that the failure to be so qualified or be in good standing
               could not reasonably be expected to have a material adverse
               effect on the Company and its subsidiaries, taken as a
               whole; all of the issued shares of capital stock of each
               subsidiary of the Company have been duly and validly
               authorized and issued, are fully paid and non-assessable and
               are owned directly by the Company, free and clear of all
               liens, encumbrances, equities or claims.

                    (d)  This Agreement has been duly authorized, executed
               and delivered by each of the Company and NETCOM On-Line
               Communication Services, Inc., a Delaware corporation
               ("NETCOM").

                    (e)  The Registration Rights Agreement has been duly
               authorized by the Company, and when executed and delivered
               by the Company will be a valid and binding agreement of the
               Company, enforceable against the Company in accordance with
               its terms except as (x) the enforceability thereof may be
               limited by the effect of any applicable bankruptcy,
               insolvency, reorganization, moratorium or similar laws now
               or hereafter in effect relating to or affecting creditors'
               rights generally and (y) the availability of equitable
               remedies may be limited by equitable principles of general
               applicability.

                    (f)  The Securities have been duly authorized by the
               Company and, when executed, authenticated and delivered in
               accordance with the Indenture and paid for by the Placement
               Agent in accordance with the terms of this Agreement, will
               (x) be valid and binding obligations of the Company
               enforceable against Company in accordance with their terms,
               except as (A) the enforceability thereof may be limited by
               the effect of applicable bankruptcy, insolvency,
               reorganization, moratorium or similar laws now or hereafter
               in effect relating to or affecting creditors' rights
               generally and (B) rights of acceleration, if applicable, and
               the availability of equitable remedies may be limited by
               equitable principles of general applicability and (y) be
               entitled to the benefits of the Indenture.

                    (g)  The Indenture has been duly authorized by the
               Company and, when executed and delivered by the Company and
               the Trustee, will be a valid and binding agreement of the
               Company enforceable against the Company in accordance with
               its terms except as (x) the enforceability thereof may be
               limited by the effect of applicable bankruptcy, insolvency,
               reorganization, moratorium or similar laws now or hereafter
               in effect relating to or affecting creditors' rights
               generally and (y) rights of acceleration, if applicable, and
               the availability of equitable remedies may be limited by
               equitable principles of general applicability.

                    (h)  The execution and delivery by the Company of, and
               the performance by the Company of its obligations under,
               this Agreement, the Indenture, the Registration Rights
               Agreement and the Securities and the issuance and sale of
               the Securities will not contravene any provision of
               applicable law or the certificate of incorporation or
               by-laws of the Company or any agreement or other instrument
               binding upon the Company or any of its subsidiaries that is
               material to the Company and its subsidiaries, taken as a
               whole, or any judgment, order or decree of any governmental
               body, agency or court having jurisdiction over the Company
               or any subsidiary, and no consent, approval, authorization
               or order of, or qualification with, any governmental body or
               agency is required for the performance by the Company of its
               obligations under this Agreement, the Indenture, the
               Registration Rights Agreement or the Securities or the
               issuance and sale of the Securities, except such as may be
               required by the securities or Blue Sky laws of the various
               states in connection with the offer and sale of the
               Securities.

                    (i)  There has not occurred any material adverse
               change, or any development involving a prospective material
               adverse change, in the condition, financial or otherwise, or
               in the earnings, business or operations of the Company and
               its subsidiaries, taken as a whole, from that set forth in
               the Preliminary Memorandum.

                    (j)  There are no legal or governmental proceedings
               pending or threatened to which the Company or any of its
               subsidiaries is a party or to which any of the properties of
               the Company or any of its subsidiaries is subject other than
               proceedings accurately described in all material respects in
               each Memorandum and proceedings that could not reasonably be
               expected to have a material adverse effect on the Company
               and its subsidiaries, taken as a whole, or on the power or
               ability of the Company to perform its obligations under this
               Agreement, the Indenture, the Registration Rights Agreement
               or the Securities or to consummate the transactions
               contemplated by the Final Memorandum.

                    (k)  The Company and its subsidiaries (i) are in
               compliance with any and all applicable foreign, federal,
               state and local laws and regulations relating to the
               protection of human health and safety, the environment or
               hazardous or toxic substances or wastes, pollutants or
               contaminants ("ENVIRONMENTAL LAWS"), (ii) have received all
               permits, licenses or other approvals required of them under
               applicable Environmental Laws to conduct their respective
               businesses and (iii) are in compliance with all terms and
               conditions of any such permit, license or approval, except
               where such noncompliance with Environmental Laws, failure to
               receive required permits, licenses or other approvals or
               failure to comply with the terms and conditions of such
               permits, licenses or approvals would not, singly or in the
               aggregate, have a material adverse effect on the Company and
               its subsidiaries, taken as a whole.

                    (l)  The Company is not, and after giving effect to the
               offering and sale of the Securities and the application of
               the proceeds thereof as described in the Final Memorandum,
               will not be an "investment company" or an entity
               "controlled" by an "investment company," as such terms are
               defined in the Investment Company Act of 1940, as amended.

                    (m)  Neither the Company nor any affiliate (as defined
               in Rule 501(b) of Regulation D under the Securities Act, an
               "AFFILIATE") of the Company has directly, or through any
               agent, (i) sold, offered for sale, solicited offers to buy
               or otherwise negotiated in respect of, any security (as
               defined in the Securities Act) which is or will be
               integrated with the sale of the Securities in a manner that
               would require the registration under the Securities Act of
               the Securities or (ii) engaged in any form of general
               solicitation or general advertising in connection with the
               offering of the Securities (as those terms are used in
               Regulation D under the Securities Act), or in any manner
               involving a public offering within the meaning of Section
               4(2) of the Securities Act.

                    (n)  None of the Company, its Affiliates or any person
               acting on its or their behalf (other than the Placement
               Agent) has engaged or will engage in any directed selling
               efforts (within the meaning of Regulation S) with respect to
               the Securities and the Company and its Affiliates and any
               person acting on its or their behalf (other than the
               Placement Agent) have complied and will comply with the
               offering restrictions requirement of Regulation S.

                    (o)  It is not necessary in connection with the offer,
               sale and delivery of the Securities to the Placement Agent
               in the manner contemplated by this Agreement to register the
               Securities under the Securities Act or to qualify the
               Indenture under the Trust Indenture Act of 1939, as amended.

                    (p)  The Securities satisfy the requirements set forth
               in Rule 144A(d)(3) under the Securities Act.

                    (q)  The Company has complied with all provisions of
               Section 517.075, Florida Statutes (Chapter 92-198, Laws of
               Florida).

                    (r)  Except as set forth in each Memorandum, the
               Company and its subsidiaries have all necessary permits,
               licenses, authorizations, consents and approvals and have
               made all necessary filings required under any federal,
               state, local or foreign supranational, national or regional
               law, regulation or rule, and have obtained all necessary
               authorizations, consents and approvals from other persons,
               material to the conduct of their respective businesses, in
               each case except to the extent that the failure to obtain
               such permits, licenses, authorizations, consents or
               approvals or to make such filings would not, singly or in
               the aggregate, have a material adverse effect on the
               properties, assets, prospects, condition, financial or
               otherwise, business or operations of the Company and its
               subsidiaries, taken as a whole; except as set forth in each
               Memorandum, the Company and its subsidiaries have not
               received any notice of proceedings which remain unresolved
               relating to revocation or modification of any such permits,
               licenses, authorizations, consents or approvals, nor is the
               Company or any of its subsidiaries in violation of, or in
               default under, any such license, authorization, consent or
               approval or any federal, state, local or foreign
               supranational, national or regional law, regulation or rule
               or any decree, order or judgment applicable to the Company
               or its subsidiaries the effect of which would reasonably be
               expected to have a material adverse effect on the
               properties, assets, condition, financial or otherwise,
               business or operations of the Company and its subsidiaries,
               taken as a whole.

                    (s)  (1) The merger of ICG Acquisition, Inc., a
               Delaware corporation ("ACQUISITION SUB"), with and into
               NETCOM has been consummated pursuant to the Agreement and
               Plan of Merger, dated October 12, 1997, as amended (the
               "MERGER AGREEMENT"), by and among ICG Communications, Inc.,
               a Delaware corporation ("ICG"), Acquisition Sub and NETCOM,
               (2) ICG transferred all of the capital stock of NETCOM to
               the Company and (3) all required consents, waivers and
               agreements in connection with such consummation or transfer,
               including any such consents, waivers and agreements from
               suppliers, customers and lessors of NETCOM, have been
               obtained prior to such consummation or transfer, as the case
               may be, except where the failure to obtain such consents,
               waivers or agreements would not have a material adverse
               effect on the Company and its subsidiaries, taken as a
               whole.

                    2.   Representations and Warranties of NETCOM.  NETCOM
          represents and warrants to, and agrees with, you that:

                    (a)  The Preliminary Memorandum does not contain and
               the Final Memorandum, in the form used by the Placement
               Agent to confirm sales and on the Closing Date, will not
               contain any untrue statement of a material fact or omit to
               state a material fact necessary to make the statements
               therein, in the light of the circumstances under which they
               were made, not misleading, except that the representations
               and warranties set forth in this paragraph apply only to
               statements or omissions in either Memorandum based upon
               information relating to NETCOM and its subsidiaries.

                    (b)  NETCOM has been duly incorporated, is validly
               existing as a corporation in good standing under the laws of
               the State of Delaware, has the corporate power and authority
               to own its property and to conduct its business as described
               in each Memorandum and is duly qualified to transact
               business and is in good standing in each jurisdiction in
               which the conduct of its business or its ownership or
               leasing of property requires such qualification, except to
               the extent that the failure to be so qualified or be in good
               standing could not reasonably be expected to have a material
               adverse effect on NETCOM and its subsidiaries, taken as a
               whole.

                    (c)  Each subsidiary of NETCOM has been duly
               incorporated, is validly existing as a corporation in good
               standing under the laws of the jurisdiction of its
               incorporation, has the corporate power and authority to own
               its property and to conduct its business as described in
               each Memorandum and is duly qualified to transact business
               and is in good standing in each jurisdiction in which the
               conduct of its business or its ownership or leasing of
               property requires such qualification, except to the extent
               that the failure to be so qualified or be in good standing
               could not reasonably be expected to have a material adverse
               effect on NETCOM and its subsidiaries, taken as a whole; all
               of the issued shares of capital stock of each subsidiary of
               NETCOM have been duly and validly authorized and issued, are
               fully paid and non-assessable and are owned directly by
               NETCOM, free and clear of all liens, encumbrances, equities
               or claims.  None of the subsidiaries of NETCOM would be
               considered a "significant subsidiary" under clause (2) of
               Rule 102(w) of Regulations S-X under the Securities Act.

                    (d)  This Agreement has been duly authorized, executed
               and delivered by NETCOM.

                    (e)  The execution and delivery by NETCOM of, and the
               performance by NETCOM of its obligations under, this
               Agreement will not contravene any provision of applicable
               law or the certificate of incorporation or by-laws of NETCOM
               or any agreement or other instrument binding upon NETCOM or
               any of its subsidiaries that is material to NETCOM and its
               subsidiaries, taken as a whole, or any judgment, order or
               decree of any governmental body, agency or court having
               jurisdiction over NETCOM or any subsidiary, and no consent,
               approval, authorization or order of, or qualification with,
               any governmental body or agency is required for the
               performance by NETCOM of its obligations under this
               Agreement.

                    (f)  There has not occurred any material adverse
               change, or any development involving a prospective material
               adverse change, in the condition, financial or otherwise, or
               in the earnings, business or operations of NETCOM and its
               subsidiaries, taken as a whole, from that set forth in the
               Preliminary Memorandum.

                    (g)  There are no legal or governmental proceedings
               pending or threatened to which NETCOM or any of its
               subsidiaries is a party or to which any of the properties of
               NETCOM or any of its subsidiaries is subject other than
               proceedings accurately described in all material respects in
               each Memorandum and proceedings that could not reasonably be
               expected to have a material adverse effect on NETCOM and its
               subsidiaries, taken as a whole, or on the power or ability
               of NETCOM to perform its obligations under this Agreement.

                    (h)  NETCOM and its subsidiaries (i) are in compliance
               with Environmental Laws, (ii) have received all permits,
               licenses or other approvals required of them under
               applicable Environmental Laws to conduct their respective
               businesses and (iii) are in compliance with all terms and
               conditions of any such permit, license or approval, except
               where such noncompliance with Environmental Laws, failure to
               receive required permits, licenses or other approvals or
               failure to comply with the terms and conditions of such
               permits, licenses or approvals would not, singly or in the
               aggregate, have a material adverse effect on NETCOM and its
               subsidiaries, taken as a whole.

                    (i)  NETCOM is not, and after giving effect to the
               offering and sale of the Securities and the application of
               the proceeds thereof as described in the Final Memorandum,
               will not be an "investment company" or an entity
               "controlled" by an "investment company," as such terms are
               defined in the Investment Company Act of 1940, as amended.

                    (j)  NETCOM has complied with all provisions of Section
               517.075, Florida statutes (Chapter 92-198, Laws of Florida).

                    (k)  Except as set forth in each Memorandum, NETCOM and
               its subsidiaries have all necessary permits, licenses,
               authorizations, consents and approvals and have made all
               necessary filings required under any federal, state, local
               or foreign supranational, national or regional law,
               regulation or rule, and have obtained all necessary
               authorizations, consents and approvals from other persons,
               material to the conduct of their respective businesses, in
               each case except to the extent that the failure to obtain
               such permits, licenses, authorizations, consents or
               approvals or to make such filings would not, singly or in
               the aggregate, have a material adverse effect on the
               properties, assets, prospects, condition, financial or
               otherwise, business or operations of NETCOM and its
               subsidiaries, taken as a whole; except as set forth in each
               Memorandum, NETCOM and its subsidiaries have not received
               any notice of proceedings which remain unresolved relating
               to revocation or modification of any such permits, licenses,
               authorizations, consents or approvals, nor is NETCOM or any
               of its subsidiaries in violation of, or in default under,
               any such license, authorization, consent or approval or any
               federal, state, local or foreign supranational, national or
               regional law, regulation or rule or any decree, order or
               judgment applicable to NETCOM or its subsidiaries the effect
               of which would reasonably be expected to have a material
               adverse effect on the properties, assets, condition,
               financial or otherwise, business or operations of NETCOM and
               its subsidiaries, taken as a whole.

                    (l)  Subsequent to the date as of which information is
               given in the Preliminary Memorandum, (1) NETCOM and its
               subsidiaries have not incurred any material liability or
               obligation, direct or contingent, nor entered into any
               material transaction not in the ordinary course of business;
               and (2) there has not been any material change in short-term
               debt or long-term debt of NETCOM and its subsidiaries,
               except in each case as described in the Final Memorandum.

                    (m)  NETCOM and its subsidiaries have good and
               marketable title in fee simple to all real property and good
               and marketable title to all personal property owned by them
               which is material to the business of NETCOM and its
               subsidiaries, in each case free and clear of all liens,
               encumbrances and defects except such as are described in
               each Memorandum or such as do not materially affect the
               value of such property and do not interfere with the use
               made and proposed to be made of such property by NETCOM and
               its subsidiaries; and any real property and buildings held
               under lease by NETCOM and its subsidiaries are held by them
               under valid, subsisting and enforceable leases with such
               exceptions as are not material and do not interfere with the
               use made and proposed to be made of such property and
               buildings by NETCOM and its subsidiaries, in each case
               except as described in each Memorandum.

                    (n)  NETCOM and its subsidiaries own or possess, or can
               acquire on reasonable terms, all material patents, patent
               rights, licenses, inventions, copyrights, know-how
               (including trade secrets and other unpatented and/or
               unpatentable proprietary or confidential information,
               systems or procedures), trademarks, service marks and trade
               names currently employed by them in connection with the
               business now operated by them, and neither NETCOM nor any of
               its subsidiaries has received any notice of infringement of
               or conflict with asserted rights of others with respect to
               any of the foregoing which, singly or in the aggregate, if
               the subject of an unfavorable decision, ruling or finding,
               would have a material adverse affect on NETCOM and its
               subsidiaries, taken as a whole.

                    (o)  No material labor dispute with the employees of
               NETCOM or any of its subsidiaries exists, except as
               described in each Memorandum, or, to the knowledge of
               NETCOM, is imminent; and NETCOM is not aware of any
               existing, threatened or imminent labor disturbance by the
               employees of any of its principal suppliers, manufacturers
               or contractors that could have a material adverse effect on
               NETCOM and its subsidiaries, taken as a whole.

                    (p)  NETCOM and its subsidiaries are insured by the
               insurers of recognized financial responsibility against such
               losses and risks and in such amounts as are prudent and
               customary in the businesses in which they are engaged;
               neither NETCOM nor any of its subsidiaries has been refused
               any insurance coverage sought or applied for; and neither
               NETCOM nor any of its subsidiaries has any reason to believe
               that it will not be able to renew its existing insurance
               coverage as and when such coverage expires or to obtain
               similar coverage from similar insurers as may be necessary
               to continue its business at a cost that would not have a
               material adverse effect on NETCOM and its subsidiaries,
               taken as a whole, except as described in each Memorandum.

                    (q)  NETCOM and each of its subsidiaries maintain a
               system of internal accounting controls sufficient to provide
               reasonable assurance that (1) transactions are executed in
               accordance with management's general or specific
               authorizations; (2) transactions are recorded as necessary
               to permit preparation of financial statements in conformity
               with generally accepted accounting principles and to
               maintain asset accountability; (3) access to assets is
               permitted only in accordance with management's general or
               specific authorization; and (4) the recorded accountability
               for assets is compared with the existing assets at
               reasonable intervals and appropriate action is taken with
               respect to any differences.

                    (r)  (1) The merger of Acquisition Sub with and into
               NETCOM has been consummated pursuant to the Merger
               Agreement, (2) ICG transferred all of the capital stock of
               NETCOM to the Company and (3) all required consents, waivers
               and agreements in connection with such consummation or
               transfer, including any such consents, waivers and
               agreements from suppliers, customers and lessors of NETCOM,
               have been obtained prior to such consummation or transfer,
               as the case may be, except where the failure to obtain such
               consents, waivers or agreements would not have a material
               adverse effect on the Company and its subsidiaries, taken as
               a whole.

                    3.   Agreements to Sell and Purchase.  The Company
          hereby agrees to sell to the Placement Agent, and the Placement
          Agent, upon the basis of the representations and warranties
          herein contained, but subject to the conditions hereinafter
          stated, agrees to purchase from the Company the Securities at a
          purchase price of $291,553,773 for the Securities plus accrued
          original issue discount, if any, from February 12, 1998 to the
          date of payment and delivery.

                    4.   Terms of Offering.  The Placement Agent has
          advised the Company that it will make an offering of the
          Securities purchased by it hereunder on the terms set forth in
          the Final Memorandum, as soon as practicable after this Agreement
          is entered into as in its judgment is advisable.

                    5.   Payment and Delivery.  Payment for the Securities
          shall be made against delivery of the Securities at a closing
          (the "CLOSING") to be held at the office of Shearman & Sterling,
          599 Lexington Avenue, New York, New York, at 9:00 A.M., New York
          City time, on February 12, 1998 or at such other time on the same
          or such other date, not later than February 27, 1998, as shall be
          designated in writing by you.  The time and date of such payment
          are herein referred to as the "CLOSING DATE".  Payment for the
          Securities shall be made by wire transfer to an account
          previously designated to the Placement Agent by the Company in
          immediately available funds.

                    Certificates for the Securities shall be in definitive
          form or global form, as specified by you, and registered in such
          names and in such denominations as you shall request in writing
          not later than one full business day prior to the Closing Date.
          The certificates evidencing the Securities shall be delivered to
          you on the Closing Date, with any transfer taxes payable in
          connection with the transfer of the Securities to the Placement
          Agent duly paid, against payment of the purchase price therefor.

                    6.   Conditions to the Placement Agent's Obligations. 
          The obligations of the Placement Agent to purchase and pay for
          the Securities on the Closing Date are subject to the following
          conditions:

                    (a)  Subsequent to the execution and delivery of this
               Agreement and prior to the Closing Date there shall not have
               occurred any change, or any development involving a
               prospective change, in the condition, financial or
               otherwise, or in the earnings, business or operations of the
               Company and its subsidiaries, taken as a whole, from that
               set forth in the Preliminary Memorandum that, in your
               reasonable judgment, is material and adverse and that makes
               it, in your reasonable judgment, impracticable to market the
               Securities on the terms and in the manner contemplated in
               the Final Memorandum.

                    (b)  You shall have received on the Closing Date
               certificates, dated the Closing Date and signed,
               respectively, by an executive officer of the Company and 
               NETCOM to the effect that the representations and warranties
               of the Company and NETCOM contained in this Agreement are
               true and correct as of the Closing Date and that each of the
               Company and NETCOM has complied with all of the agreements
               and satisfied all of the conditions on its part to be
               performed or satisfied pursuant to the transactions
               contemplated hereby or by the Memorandum on or before the
               Closing Date.

                    The officers signing and delivering such certificates
               may rely upon the best of their knowledge as to proceedings
               threatened. 

                    (c)  You shall have received on the Closing Date an
               opinion of Reid & Priest LLP, independent counsel for the
               Company and special counsel for NETCOM, dated the Closing
               Date, to the effect set forth in Exhibit B.  Such opinion
               shall be rendered to you at the request of the Company and
               shall so state therein.

                    (d)  You shall have received on the Closing Date an
               opinion of Pillsbury, Madison & Sutro LLP, independent
               counsel for NETCOM, dated the Closing Date, to the effect
               set forth in Exhibit C.  Such opinion shall be rendered to
               you at the request of NETCOM or the Company and shall so
               state therein.

                    (e)  You shall have received on the Closing Date an
               opinion of Shearman & Sterling, counsel for the Placement
               Agent, dated the Closing Date, with respect to such matters
               as you may request.

                    (f)  You shall have received on each of the date hereof
               and the Closing Date a letter, dated the date hereof or the
               Closing Date, as the case may be, in form and substance
               satisfactory to you from Ernst & Young LLP, independent
               public accountants, containing statements and information of
               the type ordinarily included in accountants  "comfort
               letters" to underwriters with respect to the financial
               statements and certain financial information contained in
               the Final Memorandum; provided that the letters delivered on
               the Closing Date shall use a "cut-off date" not earlier than
               the date hereof.

                    (g)  You shall have received on the date hereof a
               letter, dated the date hereof, in form and substance
               satisfactory to you from KPMG Peat Marwick LLP, independent
               public accountants, containing statements and information of
               the type ordinarily included in accountants  "comfort
               letters" to underwriters with respect to certain financial
               information contained in the Final Memorandum.

                    (h)  The Placement Agent and its counsel shall have
               been furnished with such other documents and certificates as
               they shall reasonably request.

                    7.   Covenants of the Company. In further consideration
          of the agreements of the Placement Agent contained in this
          Agreement, the Company covenants and agrees as follows:

                    (a)  To furnish to you in New York City, without
               charge, prior to 5:00 P.M. New York City time on the
               business day next succeeding the date of this Agreement and
               during the period mentioned in Section 7(c), as many copies
               of the Final Memorandum and any supplements and amendments
               thereto as you may reasonably request.

                    (b)  Before amending or supplementing either
               Memorandum, to furnish to you a copy of each such proposed
               amendment or supplement and not to use any such proposed
               amendment or supplement to which you reasonably object.

                    (c)  If, during such period after the date hereof and
               prior to the date on which all of the Securities shall have
               been sold by the Placement Agent, any event shall occur or
               condition exist as a result of which it is necessary in your
               judgment to amend or supplement the Final Memorandum in
               order to make the statements therein, in the light of the
               circumstances when the Final Memorandum is delivered to a
               purchaser, not misleading, or if, in the opinion of counsel
               for the Placement Agent, it is necessary to amend or
               supplement the Final Memorandum to comply with applicable
               law, forthwith to prepare and furnish, at its own expense,
               to the Placement Agent, either amendments or supplements to
               the Final Memorandum so that the statements in the Final
               Memorandum as so amended or supplemented will not, in the
               light of the circumstances when the Final Memorandum is
               delivered to a purchaser, be misleading or so that the Final
               Memorandum, as amended or supplemented, will comply with
               applicable law.

                    (d)  To endeavor to qualify the Securities for offer
               and sale under the securities or Blue Sky laws of such
               jurisdictions as you shall reasonably request.

                    (e)  Whether or not any sale of the Securities is
               consummated, to pay all expenses incident to the performance
               of its obligations under this Agreement, including:  (i) the
               preparation of each Memorandum and all amendments and
               supplements thereto, (ii) the preparation, issuance and
               delivery of the Securities, (iii) the fees and disbursements
               of the Company's and NETCOM's counsel and accountants and
               the Trustee and its counsel, (iv) the qualification of the
               Securities under securities or Blue Sky laws in accordance
               with the provisions of Section 7(d), including filing fees
               and the fees and disbursements of counsel for the Placement
               Agent in connection therewith and in connection with the
               preparation of any Blue Sky or legal investment memoranda,
               (v) the printing and delivery to the Placement Agent in
               quantities as hereinabove stated of copies of the Memorandum
               and any amendments or supplements thereto, (vi) any fees
               charged by rating agencies for the rating of the Securities,
               (vii) the fees and expenses incurred in connection with the
               admission of the Securities for trading in PORTAL or any
               other market system, (viii) the costs and expenses incurred
               by the Company and NETCOM relating to investor presentations
               on any "road show" undertaken in connection with the
               marketing of the Securities, including, without limitation,
               expenses associated with the production of road show slides
               and graphics, fees and expenses of any consultants engaged
               in connection with the road show presentations with the
               prior approval of the Company, travel and lodging expense of
               the representatives and officers of the Company and NETCOM
               and any such consultants, and the cost of any aircraft
               chartered in connection with the road show, and (ix) all
               other costs and expenses incident to the performance of the
               obligations of the Company and ICG hereunder for which
               provision is not otherwise made in this Section.

                    (f)  Neither the Company nor any Affiliate will sell,
               offer for sale or solicit offers to buy or otherwise
               negotiate in respect of any security (as defined in the
               Securities Act) which could be integrated with the sale of
               the Securities in a manner which would require the
               registration under the Securities Act of the Securities.

                    (g)  Not to solicit any offer to buy or offer or sell
               the Securities by means of any form of general solicitation
               or general advertising (as those terms are used in
               Regulation D under the Securities Act) or in any manner
               involving a public offering within the meaning of Section
               4(2) of the Securities Act.

                    (h)  While any of the Securities remain "restricted
               securities" within the meaning of the Securities Act, to
               make available, upon request, to any seller of such
               Securities, the information specified in Rule 144A(d)(4)
               under the Securities Act, unless the Company is then subject
               to Section 13 or 15(d) of the Securities Exchange Act of
               1934, as amended (the "EXCHANGE ACT").

                    (i)  To use its best efforts to permit the Securities
               to be designated PORTAL securities in accordance with the
               rules and regulations adopted by the National Association of
               Securities Dealers, Inc. relating to trading in the PORTAL
               Market.

                    (j)  None of the Company, its Affiliates or any person
               acting on its or their behalf (other than the Placement
               Agent) will engage in any directed selling efforts (as that
               term is defined in Regulation S) with respect to the
               Securities, and the Company and its Affiliates and each
               person acting on its or their behalf (other than the
               Placement Agent) will comply with the offering restrictions
               requirement of Regulation S.

                    (k)  During the period of two years after the Closing
               Date, the Company will not, and will not permit any of its
               affiliates (as defined in Rule 144A under the Securities
               Act) to, resell any of the Securities which constitute
               "restricted securities" under Rule 144A that have been
               reacquired by any of them.

                    8.   Offering of Securities; Restrictions on Transfer. 
          (a)  The Placement Agent represents and warrants that it is a
          qualified institutional buyer as defined in Rule 144A under the
          Securities Act (a "QIB"). The Placement Agent agrees with the
          Company that (i) it will not solicit offers for, or offer or
          sell, such Securities by any form of general solicitation or
          general advertising (as those terms are used in Regulation D
          under the Securities Act) or in any manner involving a public
          offering within the meaning of Section 4(2) of the Securities Act
          and (ii) it will solicit offers for such Securities only from,
          and will offer such Securities only to, persons that it
          reasonably believes to be (A) in the case of offers inside the
          United States, (1) QIBs or (2) other institutional accredited
          investors (as defined in Rule 501(a)(1), (2), (3) or (7) under
          the Securities Act ("INSTITUTIONAL ACCREDITED INVESTORS") that,
          prior to their purchase of the Securities, deliver to the
          Placement Agent a letter containing the representations and
          agreements set forth in Exhibit A to the Final Memorandum and (B)
          in the case of offers outside the United States, to persons other
          than U.S. persons ("FOREIGN PURCHASERS," which term shall include
          dealers or other professional fiduciaries in the United States
          acting on a discretionary basis for foreign beneficial owners
          (other than an estate or trust)) in reliance upon Regulation S
          under the Securities Act that, in each case, in purchasing such
          Securities are deemed to have represented and agreed as provided
          in the Final Memorandum under the caption "Transfer
          Restrictions".

                    (b)  The Placement Agent represents, warrants, and
          agrees with respect to offers and sales outside the United States
          that:

                    (i)  it understands that no action has been or will be
               taken in any jurisdiction by the Company that would permit a
               public offering of the Securities, or possession or
               distribution of either Memorandum or any other offering or
               publicity material relating to the Securities, in any
               country or jurisdiction where action for that purpose is
               required;

                    (ii) it will comply with all applicable laws and
               regulations in each jurisdiction in which it acquires,
               offers, sells or delivers Securities or has in its
               possession or distributes either Memorandum or any such
               other material, in all cases at its own expense;

                    (iii)     the Securities have not been registered under
               the Securities Act and may not be offered or sold within the
               United States or to, or for the account or benefit of, U.S.
               persons except in accordance with Rule 144A or Regulation S
               under the Securities Act or pursuant to another exemption
               from the registration requirements of the Securities Act;

                    (iv) it has offered the Securities and will offer and
               sell the Securities (A) as part of its distribution at any
               time and (B) otherwise until 40 days after the later of the
               commencement of the offering and the Closing Date, only in
               accordance with Rule 903 of Regulation S or as otherwise
               permitted in Section 8(a); accordingly, neither the
               Placement Agent, its Affiliates nor any persons acting on
               its or their behalf have engaged or will engage in any
               directed selling efforts (within the meaning of Regulation
               S) with respect to the Securities, and any Placement Agent,
               its Affiliates and any such persons have complied and will
               comply with the offering restrictions requirement of
               Regulation S;

                    (v)  it has (A) not offered or sold and, prior to the
               date six months after the Closing Date, will not offer or
               sell any Securities to persons in the United Kingdom except
               to persons whose ordinary activities involve them in
               acquiring, holding, managing or disposing of investments (as
               principal or agent) for the purposes of their businesses or
               otherwise in circumstances which have not resulted and will
               not result in an offer to the public in the United Kingdom
               within the meaning of the Public Offers of Securities
               Regulations 1995; (B) complied and will comply with all
               applicable provisions of the Financial Services Act 1986
               with respect to anything done by it in relation to the
               Securities in, from or otherwise involving the United
               Kingdom, and (C) only issued or passed on and will only
               issue or pass on in the United Kingdom any document received
               by it in connection with the issue of the Securities to a
               person who is of a kind described in Article 11(3) of the
               Financial Services Act 1986 (Investment Advertisements)
               (Exemptions) Order 1996 or is a person to whom such document
               may otherwise lawfully be issued or passed on;

                    (vi) it understands that the Securities have not been
               and will not be registered under the Securities and Exchange
               Law of Japan, and represents that it has not offered or
               sold, and agrees not to offer or sell, directly or
               indirectly, any Securities in Japan or for the account of
               any resident thereof except pursuant to any exemption from
               the registration requirements of the Securities and Exchange
               Law of Japan and otherwise in compliance with applicable
               provisions of Japanese law; and

                    (vii)     it agrees that, at or prior to confirmation
               of sales of the Securities, it will have sent to each
               distributor, dealer or person receiving a selling
               concession, fee or other remuneration that purchases
               Securities from it during the restricted period a
               confirmation or notice to substantially the following
               effect:

                    "The Securities covered hereby have not been registered
               under the U.S. Securities Act of 1933, as amended (the
               "SECURITIES ACT"), and may not be offered and sold within
               the United States or to, or for the account or benefit of,
               U.S. persons (i) as part of their distribution at any time
               or (ii) otherwise until 40 days after the later of the
               commencement of the offering and the closing date, except in
               either case in accordance with Regulation S (or Rule 144A if
               available) under the Securities Act.  Terms used above have
               the meaning given to them by Regulation S".

          Terms used in this Section 8(b) have the meanings given to them
          by Regulation S.

                    9.   Indemnity and Contribution.  (a)  Each of the
          Company and NETCOM jointly and severally agrees to indemnify and
          hold harmless the Placement Agent, and each person, if any, who
          controls the Placement Agent within the meaning of either
          Section 15 of the Securities Act or Section 20 of the Exchange
          Act, or is under common control with, or is controlled by, the
          Placement Agent, from and against any and all losses, claims,
          damages and liabilities (including, without limitation, any legal
          or other expenses reasonably incurred by the Placement Agent or
          any such controlling or affiliated person in connection with
          defending or investigating any such action or claim) caused by
          any untrue statement or alleged untrue statement of a material
          fact contained in either Memorandum (as amended or supplemented
          if the Company shall have furnished any amendments or supplements
          thereto), or caused by any omission or alleged omission to state
          therein a material fact necessary to make the statements therein
          in light of the circumstances under which they were made not
          misleading, except insofar as such losses, claims, damages or
          liabilities are caused by any such untrue statement or omission
          or alleged untrue statement or omission based upon information
          relating to the Placement Agent furnished to the Company in
          writing by the Placement Agent expressly for use therein.

                    (b)  The Placement Agent agrees to indemnify and hold
          harmless the Company and NETCOM, their directors, their officers
          and each person, if any, who controls the Company or NETCOM
          within the meaning of either Section 15 of the Securities Act or
          Section 20 of the Exchange Act or is under common control with,
          or is controlled by, the Company or NETCOM to the same extent as
          the foregoing indemnity from the Company and NETCOM to the
          Placement Agent, but only with reference to information relating
          to the Placement Agent furnished to the Company in writing by the
          Placement Agent expressly for use in either Memorandum or any
          amendments or supplements thereto.

                    (c)  In case any proceeding (including any governmental
          investigation) shall be instituted involving any person in
          respect of which indemnity may be sought pursuant to either
          paragraph (a) or (b) of this Section 9, such person (the
          "INDEMNIFIED PARTY") shall promptly notify the person against
          whom such indemnity may be sought (the "INDEMNIFYING PARTY") in
          writing and the indemnifying party, upon request of the
          indemnified party, shall retain counsel reasonably satisfactory
          to the indemnified party to represent the indemnified party and
          any others the indemnifying party may designate in such
          proceeding and shall pay the fees and disbursements of such
          counsel related to such proceeding.  In any such proceeding, any
          indemnified party shall have the right to retain its own counsel,
          but the fees and expenses of such counsel shall be at the expense
          of such indemnified party unless (i) the indemnifying party and
          the indemnified party shall have mutually agreed to the retention
          of such counsel or (ii) the named parties to any such proceeding
          (including any impleaded parties) include both the indemnifying
          party and the indemnified party and representation of both
          parties by the same counsel would be inappropriate due to actual
          or potential differing interests between them.  It is understood
          that the indemnifying party shall not, in connection with any
          proceeding or related proceedings in the same jurisdiction, be
          liable for the fees and expenses of more than one separate firm
          (in addition to any local counsel) for all such indemnified
          parties and that all such fees and expenses shall be reimbursed
          as they are incurred.  Such firm shall be designated in writing
          by the Placement Agent in the case of parties indemnified
          pursuant to paragraph (a) above and by the Company in the case of
          parties indemnified pursuant to paragraph (b) above.  The
          indemnifying party shall not be liable for any settlement of any
          proceeding effected without its written consent, but if settled
          with such consent or if there be a final judgment for the
          plaintiff, the indemnifying party agrees to indemnify the
          indemnified party from and against any loss or liability by
          reason of such settlement or judgment.  Notwithstanding the
          foregoing sentence, if at any time an indemnified party shall
          have requested an indemnifying party to reimburse the indemnified
          party for fees and expenses of counsel as contemplated by the
          second and third sentences of this paragraph, the indemnifying
          party agrees that it shall be liable for any settlement of any
          proceeding effected without its written consent if (i) such
          settlement is entered into more than 30 days after receipt by
          such indemnifying party of the aforesaid request and (ii) such
          indemnifying party shall not have reimbursed the indemnified
          party in accordance with such request prior to the date of such
          settlement.  No indemnifying party shall, without the prior
          written consent of the indemnified party, effect any settlement
          of any pending or threatened proceeding in respect of which any
          indemnified party is or could have been a party and indemnity
          could have been sought hereunder by such indemnified party,
          unless such settlement includes an unconditional release of such
          indemnified party from all liability on claims that are the
          subject matter of such proceeding.

                    (d)  To the extent the indemnification provided for in
          paragraph (a) or (b) of this Section 9 is unavailable to an
          indemnified party or insufficient in respect of any losses,
          claims, damages or liabilities, then each indemnifying party
          under such paragraph, in lieu of indemnifying such indemnified
          party thereunder, shall contribute to the amount paid or payable
          by such indemnified party as a result of such losses, claims,
          damages or liabilities (i) in such proportion as is appropriate
          to reflect the relative benefits received by the Company and
          NETCOM, on the one hand, and the Placement Agent, on the other
          hand, from the offering of the Securities or (ii) if the
          allocation provided by clause (i) above is not permitted by
          applicable law, in such proportion as is appropriate to reflect
          not only the relative benefits referred to in clause (i) above
          but also the relative fault of the Company and NETCOM on the one
          hand and the Placement Agent on the other hand in connection with
          the statements or omissions that resulted in such losses, claims,
          damages or liabilities, as well as any other relevant equitable
          considerations.  The relative benefits received by the Company
          and NETCOM on the one hand and the Placement Agent on the other
          hand in connection with the offering of the Securities shall be
          deemed to be in the same respective proportions as the net
          proceeds from the offering of the Securities (before deducting
          expenses) received by the Company and NETCOM and the total
          discounts and commissions received by the Placement Agent in
          respect thereof bear to the aggregate offering price of the
          Securities.  The relative fault of the Company and NETCOM on the
          one hand and of the Placement Agent on the other hand shall be
          determined by reference to, among other things, whether the
          untrue or alleged untrue statement of a material fact or the
          omission or alleged omission to state a material fact relates to
          information supplied by the Company or NETCOM or by the Placement
          Agent and the parties' relative intent, knowledge, access to
          information and opportunity to correct or prevent such statement
          or omission.

                    (e)  The Company, NETCOM and the Placement Agent agree
          that it would not be just or equitable if contribution pursuant
          to this Section 9 were determined by pro rata allocation or by
                                               --- ----
          any other method of allocation that does not take account of the
          equitable considerations referred to in paragraph (d) of this
          Section 9.  The amount paid or payable by an indemnified party as
          a result of the losses, claims, damages and liabilities referred
          to in paragraph (d) of this Section 9 shall be deemed to include,
          subject to the limitations set forth above, any legal or other
          expenses reasonably incurred by such indemnified party in
          connection with investigating or defending any such action or
          claim.  Notwithstanding the provisions of this Section 9, the
          Placement Agent shall not be required to contribute any amount in
          excess of the amount by which the total price at which the
          Securities resold by it in the initial placement of the
          Securities were offered to investors exceeds the amount of any
          damages that the Placement Agent has otherwise been required to
          pay by reason of such untrue or alleged untrue statement or
          omission or alleged omission.  No person guilty of fraudulent
          misrepresentation (within the meaning of Section 11(f) of the
          Securities Act) shall be entitled to contribution from any person
          who was not guilty of such fraudulent misrepresentation.  The
          indemnity and contribution provisions contained in this Section 9
          and the representations and warranties of the Company and NETCOM
          contained in this Agreement shall remain operative and in full
          force and effect regardless of (i) any termination of this
          Agreement, (ii) any investigation made by or on behalf of the
          Placement Agent or any person controlling the Placement Agent or
          by or on behalf of the Company or NETCOM, their officers or
          directors or any person controlling the Company or NETCOM and
          (iii) acceptance of and payment for any of the Securities.  The
          remedies provided for in this Section 9 are not exclusive and
          shall not limit any rights or remedies which may otherwise be
          available to any indemnified party at law or in equity.

                    10.  Termination.  This Agreement shall be subject to
          termination by notice given by you to the Company, if (a) after
          the execution and delivery of this Agreement and prior to the
          Closing Date (i) trading generally shall have been suspended or
          materially limited on or by, as the case may be, any of the New
          York Stock Exchange, the American Stock Exchange, the National
          Association of Securities Dealers, Inc., the Chicago Board of
          Options Exchange, the Chicago Mercantile Exchange or the Chicago
          Board of Trade, (ii) trading of any securities of the Company or
          ICG shall have been suspended on any exchange or in any
          over-the-counter market, (iii) a general moratorium on commercial
          banking activities in New York shall have been declared by either
          Federal or New York State authorities or (iv) there shall have
          occurred any outbreak or escalation of hostilities or any change
          in financial markets or any calamity or crisis that, in your
          judgment, is material and adverse and (b) in the case of any of
          the events specified in clauses 10(a)(i) through 10(a)(iv), such
          event, singly or together with any other such event, makes it, in
          your judgment, impracticable to market the Securities on the
          terms and in the manner contemplated in the Final Memorandum.

                    11.  Effectiveness.  This Agreement shall become
          effective upon the execution and delivery hereof by the parties
          hereto.

                     If this Agreement shall be terminated by the Placement
          Agent because of any failure or refusal on the part of the
          Company or NETCOM to comply with the terms or to fulfill any of
          the conditions of this Agreement, or if for any reason the
          Company or NETCOM shall be unable to perform its obligations
          under this Agreement, the Company will reimburse the Placement
          Agent for all out-of-pocket expenses (including the reasonable
          fees and disbursements of its counsel) reasonably incurred by the
          Placement Agent in connection with this Agreement or the offering
          contemplated hereunder.

                    12.  Counterparts.  This Agreement may be signed
          manually or by facsimile in any number of counterparts, each of
          which shall be deemed to be an original, with the same effect as
          if the signatures thereto and hereto were upon the same
          instrument.

                    13.  Applicable Law; Submission to Jurisdiction.  This
          Agreement shall be governed by and construed in accordance with
          the laws of the State of New York.  Each of the Company and
          NETCOM agrees to submit to the jurisdiction of any federal or
          state court located in The City of New York in any suit, action
          or proceeding with respect to this Agreement and for actions
          brought under the U.S. federal or state securities laws brought
          in any such court.

                    14.  Headings.  The headings of the sections of this
          Agreement have been inserted for convenience of reference only
          and shall not be deemed a part of this Agreement.


                                        Very truly yours,

                                        ICG SERVICES, INC.


                                        By:  /s/ Don Teague
                                            -------------------------------
                                             Name: H. Don Teague
                                             Title: Executive Vice President,
                                                    General Counsel and
                                                    Secretary




                                        NETCOM ON-LINE COMMUNICATION 
                                          SERVICES, INC.

                                        By:   /s/ James D. Grenfell
                                             -----------------------------
                                             Name: James D. Grenfell
                                             Title: Executive Vice President
                                                    and Chief Financial Officer




          Accepted as of the date hereof
          Morgan Stanley & Co. Incorporated


          By:  /s/ James B. Avery
              --------------------------
              Name: James B. Avery
              Title: Principal