WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ITXC CORP.'S
AUDITED YEAR-END FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C> <C>
<PERIOD-TYPE> 12-MOS 12-MOS
<FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999
<PERIOD-START> JAN-01-1998 JAN-01-1999
<PERIOD-END> DEC-31-1998 DEC-31-1999
<CASH> 3,971,237 49,017,768
<SECURITIES> 200,000 25,378,297
<RECEIVABLES> 673,214 7,022,358
<ALLOWANCES> 172,475 1,283,554
<INVENTORY> 0 0
<CURRENT-ASSETS> 4,793,435 81,432,971
<PP&E> 3,365,116 18,233,372
<DEPRECIATION> 349,587 2,821,716
<TOTAL-ASSETS> 7,833,797 99,861,609
<CURRENT-LIABILITIES> 2,724,755 15,623,013
<BONDS> 0 0
9,866,723 0
0 0
<COMMON> 8,381 35,816
<OTHER-SE> 1,727,315 107,848,492
<TOTAL-LIABILITY-AND-EQUITY> 7,833,797 99,861,609
<SALES> 1,890,952 25,411,394
<TOTAL-REVENUES> 1,890,952 25,411,394
<CGS> 0 0
<TOTAL-COSTS> 3,529,547 26,314,264
<OTHER-EXPENSES> 5,659,819 20,050,505
<LOSS-PROVISION> 172,475 2,600,554
<INTEREST-EXPENSE> 139,575 207,160
<INCOME-PRETAX> (7,207,451) (19,664,735)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> (7,207,451) (19,664,735)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (7,207,451) (19,664,735)
<EPS-BASIC> (0.88) (1.29)
<EPS-DILUTED> (0.88) (1.29)
</TABLE>