<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FORM THE SECOND
QUARTER 2000 FORM 10-Q OF WEST TELESERVICES CORPORATION, AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO THE FINANCIAL STATEMENTS CONTAINED THEREIN.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> APR-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 87,968
<SECURITIES> 0
<RECEIVABLES> 119,069
<ALLOWANCES> 2,779
<INVENTORY> 0
<CURRENT-ASSETS> 234,863
<PP&E> 311,834
<DEPRECIATION> 128,305
<TOTAL-ASSETS> 484,699
<CURRENT-LIABILITIES> 102,152
<BONDS> 0
0
0
<COMMON> 643
<OTHER-SE> 331,424
<TOTAL-LIABILITY-AND-EQUITY> 484,699
<SALES> 171,537
<TOTAL-REVENUES> 171,537
<CGS> 89,224
<TOTAL-COSTS> 147,206
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 455
<INCOME-PRETAX> 24,942
<INCOME-TAX> 9,222
<INCOME-CONTINUING> 15,720
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 15,720
<EPS-BASIC> 0.24
<EPS-DILUTED> 0.23
</TABLE>