<TABLE> <S> <C>

<PAGE>
<ARTICLE>           5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-Q FOR THE PERIOD ENDED SEPTEMBER 30, 1999 AND IS QUALIFIED IN
ITS ENTIRETY B REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>        1,000

<S>                             <C>                              <C>
<PERIOD-TYPE>                   3-MOS                            9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999            DEC-31-1999
<PERIOD-START>                             JUL-01-1999            JAN-01-1999
<PERIOD-END>                               SEP-30-1999            SEP-30-1999
<CASH>                                          12,127                      0
<SECURITIES>                                    66,375                      0
<RECEIVABLES>                                   37,048                      0
<ALLOWANCES>                                     2,425                      0
<INVENTORY>                                          0                      0
<CURRENT-ASSETS>                               121,606                      0
<PP&E>                                          41,977                      0
<DEPRECIATION>                                  16,073                      0
<TOTAL-ASSETS>                                 153,678                      0
<CURRENT-LIABILITIES>                           51,350                      0
<BONDS>                                              0                      0
<PREFERRED-MANDATORY>                                0                      0
<PREFERRED>                                          0                      0
<COMMON>                                            16                      0
<OTHER-SE>                                     102,165                      0
<TOTAL-LIABILITY-AND-EQUITY>                   153,678                      0
<SALES>                                         19,503                 46,589
<TOTAL-REVENUES>                                33,776                 87,011
<CGS>                                            1,317                  3,864
<TOTAL-COSTS>                                    9,082                 27,164
<OTHER-EXPENSES>                                27,612                 75,763
<LOSS-PROVISION>                                    50                    350
<INTEREST-EXPENSE>                                   1                     62
<INCOME-PRETAX>                                (2,109)                (12,974)
<INCOME-TAX>                                     (717)                 (4,411)
<INCOME-CONTINUING>                            (1,392)                 (8,563)
<DISCONTINUED>                                       0                      0
<EXTRAORDINARY>                                      0                      0
<CHANGES>                                            0                      0
<NET-INCOME>                                   (1,392)                 (8,563)
<EPS-BASIC>                                     (0.08)                  (0.15)
<EPS-DILUTED>                                   (0.08)                  (0.15)
<FN>
<F1>
</FN>


</TABLE>