EXHIBIT 23.3



               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

         We have issued our report dated May 28, 2002 (except for Notes B-6 and
H, as to which the date is July 28, 2002), accompanying the statement of assets
acquired and liabilities assumed and the related statement of revenue and direct
operating expenses of the domestic operating assets previously used by Winstar
Communications, Inc. and certain of its subsidiaries and acquired by IDT
Corporation to operate a competitive local exchange carrier in multiple
jurisdictions using fixed wireless technology, as of December 31, 2000 and for
the year then ended included in the current report on Form 8-K/A of IDT
Corporation dated December 19, 2001 filed with the Securities and Exchange
Commission on August 28, 2002, which is incorporated by reference in this
Registration Statement on Form S-8 (File No 333-63282). We consent to the
incorporation by reference in the Registration Statement of the aforementioned
report.



/s/ GRANT THORNTON LLP

New York, New York
October 4, 2002