<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 10-Q AS OF
JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 69,754<F1>
<SECURITIES> 0
<RECEIVABLES> 93,469
<ALLOWANCES> 3,351
<INVENTORY> 0
<CURRENT-ASSETS> 166,270
<PP&E> 69,138
<DEPRECIATION> 36,868
<TOTAL-ASSETS> 310,452
<CURRENT-LIABILITIES> 92,742
<BONDS> 46,118
0
0
<COMMON> 530
<OTHER-SE> 170,573
<TOTAL-LIABILITY-AND-EQUITY> 310,452
<SALES> 188,125
<TOTAL-REVENUES> 188,125
<CGS> 72,504
<TOTAL-COSTS> 72,504
<OTHER-EXPENSES> 20,254
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 9,023
<INCOME-PRETAX> 67,999
<INCOME-TAX> (25,704)
<INCOME-CONTINUING> 42,295
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 42,295
<EPS-BASIC> 0.81
<EPS-DILUTED> 0.74
<FN>
<F1>(1) IN THOUSANDS EXCEPT PER SHARE AMOUNTS.
</FN>
</TABLE>