Exhibit 23.02

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our report dated October 14, 2016, with respect to the consolidated financial statements included in the Annual Report of IDT Corporation on Form 10-K for the year ended July 31, 2017. We hereby consent to the incorporation by reference of said report in the Registration Statements of IDT Corporation on Forms S-3 (File No. 333-53719, File No. 333-61565, File No. 333-71991, File No. 333-77395, File No. 333-80133, File No. 333-86261, File No. 333-104286, File No. 333-115403, and File No. 333-119190) and Forms S-8 (File No. 333-73167, File No. 333-100424, File No. 333-105865, File No. 333-116266, File No. 333-130287, File No. 333-130288, File No. 333-130562, File No. 333-146718, File No. 333-154257, File No. 333-177247, File No. 333-199299, File No. 333-208447 and File No. 333-214105).

/s/ Grant Thornton

New York, New York

October 16, 2017