Exhibit 5.1


                               November 12, 1999

InfoSpace.com, Inc.
15375 N.E. 90/th/ Street
Redmond, Washington 98052

  RE:  REGISTRATION STATEMENT ON FORM S-8

Ladies and Gentlemen:

     We have examined the Registration Statement on Form S-8 to be filed by you
with the Securities and Exchange Commission on or about November 12, 1999 (the
"Registration Statement") in connection with the registration under the
Securities Act of 1933, as amended, of 102,544 shares of your Common Stock (the
"Shares") to be issued upon exercise of stock options granted pursuant to the
INEX Corporation Share Option Plan (the "Plan").  As your legal counsel, we have
examined the proceedings proposed to be taken in connection with the issuance
and sale of the Shares to be issued under the Plan.

     In arriving at the opinion expressed below, we have examined and relied on
the following documents:

          1.   The Restated Certificate of Incorporation and the Restated Bylaws
               of the Company;

          2.   The records of meetings and consents of the Board of Directors
               and stockholders of the Company and INEX Corporation provided to
               us by the Company;

          3.   The INEX Corporation Share Option Plan;

          4.   The Agreement and Plan of Acquisition and Arrangement dated
               August 13, 1999 by and between the Company and INEX Corporation,
               as amended; and

          5.   The Articles of Arrangement of INEX Corporation and InfoSpace.com
               Canada Holdings Inc. as filed with the Ministry of Consumer and
               Commercial Relations for the Province of Ontario pursuant to the
               Business Corporations Act (Ontario).

     In addition, we have examined and relied on the originals or copies
certified or otherwise identified to our satisfaction of all such corporate
records of the Company and such other instruments and other certificates of
public officials, officers and representatives of the Company and such other
persons, and we have made such investigations of law, as we have deemed
appropriate as a basis for the opinions expressed below.

     Based upon the foregoing, it is our opinion that:


          1.   The Company has corporate power adequate for the issuance of the
               Shares in accordance with the S-8 Registration Statement.

          2.   The Company has taken all necessary corporate action required to
               authorize the issuance and sale of the Shares.

          3.   When certificates for the Shares have been duly executed and
               countersigned, and delivered against due receipt of the exercise
               price for the Shares as described in the options relating thereto
               and the Plan, the Shares will be legally and validly issued,
               fully paid and nonassessable.

     We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including any Prospectus constituting a part thereof,
and any amendments thereto.

                                 Very truly yours,

                                 WILSON SONSINI GOODRICH & ROSATI
                                 Professional Corporation

                                 /s/ Wilson Sonsini Goodrich & Rosati P.C.