PRESS RELEASE

August 29, 1997                                  Contact:  Linda A. Grunberg
                                                           402-255-3748 (office)
                                                           402-390-7188 (FAX)

                                                           Brian Larson
                                                           402-255-3757 (office)
                                                           402-255-8666 (FAX)


      Data Transmission Network Corporation Adopts Shareholder Rights Plan

         Omaha, NE -- Data Transmission Network Corporation (DTN), traded on the
NASDAQ exchange as DTLN, announced today that its Board of Directors has adopted
a  Shareholder  Rights  Plan and  declared a  dividend  of one  preferred  stock
purchase  right on each  outstanding  share  of its  common  stock.  The Plan is
intended to protect and potentially enhance shareholder value.
         The  non-taxable  dividend  distribution  will be made on  September 2,
1997,  payable to shareholders of record on that date. The Rights will expire on
August 29, 2007.  Until the rights become  exercisable  upon certain  triggering
events, the Rights trade with the Company's common stock as a unit.
         The Plan is similar  to plans  adopted  by many  other  companies.  The
Rights are  designed  to assure  that all  shareholders  receive  fair and equal
treatment  in the event of any  proposed  takeover  of the  Company and to guard
against  partial  tender  offers or other tactics to gain control of the Company
which might provide inadequate or dissimilar value to shareholders. The Board is
not aware of any current efforts to acquire the Company at this time.

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         The rights  become  exercisable  only if a person or group  acquires 11
percent or more of DTN's common stock or announces a tender offer for 11 percent
or more of DTN's  common  stock.  The Plan  allows a person or group to  acquire
greater  than 11% (but not more than 20%) of DTN's  common  stock  with a voting
trust agreement as provided in the Plan.  Each Right will initially  entitle the
holder to  purchase  one  one-thousandths  of a share of a new  series of junior
participating preferred stock at an exercise price of $150.00.
         If a person  acquires  11 percent or more of DTN's  common  stock,  all
holders of rights other than the acquiring  person are entitled to acquire DTN's
common stock at a substantial discount. If after such event DTN is acquired in a
merger or other  business  combination,  rights holders would be able to buy the
acquiring  company's  shares at a substantial  discount.  At any time within ten
days after a person or group has acquired beneficial ownership of 11% or more of
the Company's  common stock, the Rights are redeemable for one cent per Right at
the option of certain members of the Board of Directors.
         After the Rights become exercisable,  the Plan, in essence, permits DTN
shareholders  (other  than the person or group  attempting  to gain  control) to
acquire  DTN  shares at a  significant  discount.  This  right  will  dilute the
ownership of the acquiring person or group and encourage them to first negotiate
with DTN's Board of Directors.
         Data Transmission  Network  Corporation  (NASDAQ:  DTLN), an electronic
information and communication  services company headquartered in Omaha, NE, is a
leader in the  delivery  of  time-sensitive  information.  DTN is  committed  to
providing the best information and analysis  available,  as quickly as possible,
at an affordable  cost to over 154,000  subscribers in the U.S. and Canada.  The
company  has  information  and  communication  services  for  the  agricultural,
automotive,  energy, farm implement,  financial,  mortgage,  produce, golf, turf
management,    construction,    aviation,   emergency   management   and   other
weather-related industries.
                       Visit our web site at www.dtn.com.

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