
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from ACE*COMM
Corporation's unaudited financial statements as of and for the nine months ended
March 31, 1997 and is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          JUN-30-1997
<PERIOD-START>                             JUL-01-1996
<PERIOD-END>                               MAR-31-1997
<CASH>                                           6,583
<SECURITIES>                                         0
<RECEIVABLES>                                   14,216
<ALLOWANCES>                                        10
<INVENTORY>                                      2,025
<CURRENT-ASSETS>                                23,430
<PP&E>                                           3,595
<DEPRECIATION>                                   1,116
<TOTAL-ASSETS>                                  27,930
<CURRENT-LIABILITIES>                            7,029
<BONDS>                                            346
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            82
<OTHER-SE>                                      20,473
<TOTAL-LIABILITY-AND-EQUITY>                    27,930
<SALES>                                         21,730
<TOTAL-REVENUES>                                21,730
<CGS>                                           10,568
<TOTAL-COSTS>                                   10,568
<OTHER-EXPENSES>                                 8,618
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               (124)
<INCOME-PRETAX>                                  2,667
<INCOME-TAX>                                       736
<INCOME-CONTINUING>                              1,931
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,931
<EPS-PRIMARY>                                      .23
<EPS-DILUTED>                                        0
        

</TABLE>
