Leading Intelligent Infrastructure Provider and Multinational Telecom Company to Provide Interoperability Services in Emerging Markets NEWARK, N.J. and MOUNTAIN VIEW, Calif., June 8 /PRNewswire-FirstCall/ -- IDT Telecom, a subsidiary of international telecom and technology company IDT Corporation (NYSE: IDT; IDT.C), and VeriSign, Inc. (NASDAQ:VRSN), the leading provider of intelligent infrastructure services for the Internet and telecommunications networks, today announced a multi-year agreement to jointly market advanced services to mobile operators. IDT Telecom will offer VeriSign's Inter-Carrier Short Messaging Service (SMS), Multi-Media Messaging Service (MMS) and Voice Roaming Settlement and Exchange services in the emerging markets of Eastern Europe, Africa, Asia, Central America and Latin America. The services will facilitate interoperability between disparate carrier networks and devices. The combination of IDT's extensive market reach in emerging markets and VeriSign's managed communications services will enable mobile operators to introduce innovative messaging, roaming and premium content services that can help increase revenue and loyalty. "International and domestic phone companies rely on IDT for our efficient, reliable and cost-effective routing solutions," said Yona Katz, CEO of IDT Telecom. "Now in conjunction with VeriSign, IDT can provide mobile operators more comprehensive solutions that meet advanced voice and data networking needs." "VeriSign's intelligent infrastructure services are playing a significant role in the growth of next-generation communications, commerce and content for wireless and wireline providers globally," said Vernon Irvin, executive vice president and general manager, VeriSign Communications Services. "This relationship with IDT Telecom will help VeriSign add customers in fast-growing emerging markets such as Eastern Europe and Africa." IDT Telecom currently uses a number of VeriSign Communications and Database services in the United States, including its Signaling System 7 (SS7) services. About IDT IDT Corporation through its IDT Telecom subsidiary, is a facilities-based, multinational carrier that provides a broad range of telecommunications services to retail and wholesale customers worldwide. IDT Telecom, by means of its own international telecommunications backbone and fiber optic network infrastructure, provides its customers with integrated and competitively priced international and domestic long distance and domestic all-distance telephony and prepaid calling cards. IDT Capital is the IDT division principally responsible for the Company's initiatives in brochure distribution, retail energy and new technologies. Net2Phone, Inc., a subsidiary of IDT Corporation, is a provider of high-quality global retail Voice over IP services and offers a fully outsourced cable telephony service to cable operators allowing cable operators to provide residential phone service to their subscribers. About VeriSign VeriSign, Inc. operates intelligent infrastructure services that enable and protect billions of interactions every day across the world's voice and data networks. Additional news and information about the company is available at http://www.verisign.com/. NOTE: Trademarks VeriSign and other trademarks, service marks and logos are registered or unregistered marks of VeriSign, Inc. and its subsidiaries in the United States and in foreign countries. Copyright (C) 2006 VeriSign, Inc. All rights reserved. Forward Looking Statement Statements in this announcement other than historical data and information constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements involve risks and uncertainties that could cause IDT's or VeriSign's actual results to differ materially from those stated or implied by such forward-looking statements. The potential risks and uncertainties include, in the case of Verisign, among others, the uncertainty of future revenue and profitability and potential fluctuations in quarterly operating results due to such factors as the risk that VeriSign's announced strategic relationships, including the relationship described herein may not result in additional customers, profits or revenues; and increased competition and pricing pressures. More information about potential factors that could affect VeriSign's business and financial results is included in VeriSign's filings with the Securities and Exchange Commission, including in the company's respective Annual Reports on Form 10-K for the year ended December 31, 2005 and quarterly reports on Form 10-Q. More information about potential factors that could affect IDT's business and financial results is included in IDT's filings with the Securities and Exchange Commission. Neither IDT nor VeriSign undertakes any obligation to update any of the forward-looking statements after the date of this press release. DATASOURCE: VeriSign, Inc. CONTACT: Gil Nielsen, VP Corporate Communications of IDT Corporation, +1-973-438-3553; or Lori Sinsley, Senior Corporate Communications Manager of VeriSign, +1-650-426-4716, or Web site: http://www.verisign.com/

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