Exhibit 21.01

Subsidiaries of the Registrant

DOMESTIC SUBSIDIARIES

CORPORATIONS



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|225 Old NB Road Inc.                                                                                                                                                                                                                                                                                                                                                                                                        |  | IDT International, Corp.                                                                                                                                                                                                                                                                                                                                                                                                                       
|226 Old NB Road, Corp. Advanced Data
Services, Inc. (Qualified in NC and GA as Advance Data Services of SC, Inc.) Beltway Acquisition Corporation (d/b/a WMET in DE) CTM Brochure Display, Inc. Dipchip Corp. Entrix Telecom, Inc. IDT America, Corp. (d/b/a DSA Telecom) IDT Capital, Inc. IDT Carmel Holdings, Inc. IDT
Carmel, Inc. IDT Contact Services, Inc. IDT Domestic Telecom,
Inc. IDT Energy, Inc. IDT ESL, Inc. |  | IDT Internet Mobile Group, Inc. (d/b/a
Zedge Studio in NJ) IDT Investments Inc. IDT Local Media, Inc. (d/b/a ChamberPull, LocalPull and GetLocalSales.com in CT) IDT Nevada Holdings, Inc. IDT Spectrum, Inc. IDT Stored Value Service, Inc. IDT Telecom, Inc. IDT Venture Capital Corporation IDT Venture Capital, Inc. IDT Venture Holdings, Inc. IDT Wireless, Inc. Net2Phone, Inc. Outside Counsel Solutions, Inc. Powerlegal Support, Inc.
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DOMESTIC SUBSIDIARIES

LIMITED LIABILITY COMPANIES



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|Alternative Telecom LLC Ethnic Grocery
Brands LLC Executive Union Telecard, LLC (d/b/a Exclusive
Telecard, LLC in NJ) Hillview Avenue Realty JV, LLC Hillview
Avenue Realty, LLC Idea and Design Works LLC. (d/b/a IDW
Publishing in CA) IDT 225 Old NB Road, LLC IDT 226 Old NB Road,
LLC IDT Advanced Communication Services, LLC IDT America of
Virginia, LLC IDT Capital Real Estate Holdings, LLC IDT Carmel
Portfolio Management, LLC IDT Domestic-Union, LLC IDT Financial
Services, LLC IDT Prepaid Solutions, IDT Spectrum,
LLC |  | IT Network Distribution LLC King Telecom,
LLC LTP Wireless 2, LLC Net2Phone Cable Telephony,
LLC Net2Phone Global Services, LLC Telecard Network, L.L.C. Touch-N-Buy, LLC Tuyo Mobile, LLC Union Communications LLC Union CT Telecom, L.L.C. Union Romerias Georgia, LLC Union Telecard Alliance, LLC Union Telecard Arizona, LLC Union Telecard Connecticut, LLC Union Telecom Texas LLC UTA Web Sales LLC
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FOREIGN SUBSIDIARIES



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|DirectTel Dutch Holdings B.V. (HOLLAND) DYP
C.V. (HOLLAND) IDT Brazil Limitada (BRAZIL) IDT Brazil Telecom
Limitada (BRAZIL) IDT Chile S.A. (CHILE) IDT Corporation de
Argentina S.A. (ARGENTINA) IDT Europe B.V.B.A. (BELGIUM) IDT
France SARL (FRANCE) IDT Global Israel Ltd. (ISRAEL) IDT Global
Limited (UNITED KINGDOM) |  | IDT Telecom Asia Pacific Limited IDT Peru
S.R.L. (PERU) IDT Puerto Rico & Co. (PUERTO RICO) Phonecards Dominicana C por A (DOMINICAN REPUBLIC) SPD Dutch Holdings B.V. (HOLLAND) SPD Puerto Rico Corp (PUERTO RICO) TimeTel Dutch Holdings B.V. (HOLLAND) TLL Dutch Holdings B.V. (HOLLAND) Zedge Nordic NUF Limited
(NORWAY)
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