<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY INFORMATION EXTRACTED FROM THE NETSOLVE
INCORPORATED CONSOLIDATED BALANCE SHEET FOR SEPTEMBER 30, 2000 AND THE
CONSOLIDATED STATEMENT OF INCOME FOR THE SIX MONTHS ENDED SEPTEMBER 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> MAR-31-2001
<PERIOD-END> SEP-30-2000
<CASH> 51,645
<SECURITIES> 0
<RECEIVABLES> 3,257
<ALLOWANCES> 214
<INVENTORY> 241
<CURRENT-ASSETS> 59,096
<PP&E> 11,874
<DEPRECIATION> 6,158
<TOTAL-ASSETS> 66,129
<CURRENT-LIABILITIES> 5,102
<BONDS> 0
0
0
<COMMON> 146
<OTHER-SE> 60,776
<TOTAL-LIABILITY-AND-EQUITY> 66,129
<SALES> 22,835
<TOTAL-REVENUES> 0
<CGS> 0
<TOTAL-COSTS> 13,434
<OTHER-EXPENSES> 6,371
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 29
<INCOME-PRETAX> 4,844
<INCOME-TAX> 1,792
<INCOME-CONTINUING> 3,052
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 3,052
<EPS-BASIC> 0.21
<EPS-DILUTED> 0.19
</TABLE>