
<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 THREE MONTHS
ENDED SEPTEMBER 30, 1997.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                           5,293
<SECURITIES>                                         0
<RECEIVABLES>                                   16,393
<ALLOWANCES>                                        10
<INVENTORY>                                      2,647
<CURRENT-ASSETS>                                25,805
<PP&E>                                           5,279
<DEPRECIATION>                                   1,340
<TOTAL-ASSETS>                                  32,101
<CURRENT-LIABILITIES>                            7,319
<BONDS>                                            912
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            86
<OTHER-SE>                                      22,507
<TOTAL-LIABILITY-AND-EQUITY>                    32,101
<SALES>                                          8,735
<TOTAL-REVENUES>                                 8,735
<CGS>                                            3,684
<TOTAL-COSTS>                                    3,684
<OTHER-EXPENSES>                                 3,792
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                (52)
<INCOME-PRETAX>                                  1,312
<INCOME-TAX>                                       512
<INCOME-CONTINUING>                                800
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       800
<EPS-PRIMARY>                                    $0.09
<EPS-DILUTED>                                        0
        

</TABLE>
