<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM IDT'S FISCAL
1999 FINANCIAL STATEMENTS, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.


                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1999
<PERIOD-START>                             AUG-01-1998
<PERIOD-END>                               JUL-31-1999
<CASH>                                      52,903,479
<SECURITIES>                                77,869,655
<RECEIVABLES>                              113,789,127
<ALLOWANCES>                                 7,643,000
<INVENTORY>                                          0
<CURRENT-ASSETS>                           292,198,280
<PP&E>                                     151,472,278
<DEPRECIATION>                              37,349,355
<TOTAL-ASSETS>                             559,871,379
<CURRENT-LIABILITIES>                      112,783,537
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       239,829
<OTHER-SE>                                 276,089,334
<TOTAL-LIABILITY-AND-EQUITY>               559,871,379
<SALES>                                    732,183,855
<TOTAL-REVENUES>                           732,183,855
<CGS>                                      575,049,683
<TOTAL-COSTS>                              739,909,384
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                             5,558,000
<INTEREST-EXPENSE>                          11,318,964
<INCOME-PRETAX>                           (10,989,311)
<INCOME-TAX>                                 7,253,000
<INCOME-CONTINUING>                       (14,933,759)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                            (3,269,787)
<CHANGES>                                            0
<NET-INCOME>                              (18,203,546)
<EPS-BASIC>                                          0
<EPS-DILUTED>                                   (1.33)