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VeriSign Communications Services and NetNumber Demonstrate Interoperability Employing the PacketCable ENUM Server Provisioning Protocol

OLYMPIA, WA (Marketwire) - VeriSign (NASDAQ: VRSN) Communications Services, a leader in ENUM registry services, and NetNumber, the developer of the industry leading TITAN addressing and routing servers, announced the successful certification of the VeriSign NRD4.2 software release against the NetNumber software version TITAN 6.7 that implements the PacketCable ENUM Server Provisioning Protocol (ESPP).

The VeriSign Network Routing Directory, a carrier ENUM registry utilized by the global telecommunication industry to simplify the administrative complexity of internetworking, expedites the exchange of routing information between network operators.

The NetNumber TITAN platform provides network operators with a platform upon which to host inter-network switch translations downloaded from Carrier ENUM registries, such as the VeriSign Network Routing Directory.

Proven interoperability between the VeriSign Network Routing Directory and the NetNumber TITAN platform delivers end-to-end Carrier ENUM services to network operators that adopt the PacketCable specification. The establishment of a multi-operator interconnect registry provides a solution to out-of-synch databases and disparate switch translations, increasing the efficiency of intercarrier connections and resulting in call completion directed towards least-cost interconnects.

"One of the prime reasons our customers employ our service is its support of an open multi-vendor environment," said Paul Florack, vice president of Network Services, VeriSign. "Service providers can request the registry use the standard PacketCable ENUM Server Provisioning Protocol (ESPP) to replicate to third party platforms within their span-of-control. Exchanging and synchronizing the most cost-effective routes, programmed automatically, avoids the problems and associated costs of mistake-prone manual labor."

"The TITAN server provides Network Routing Directory, NRD, with a mechanism for enabling carriers/operators to download and access a local copy of NRD data for use in the local addressing and routing process. Application specific addressing and routing services supported on TITAN using NRD data include but are not limited to: number-portability services, ENUM routing services, SIP-redirect services, SCCP/GTT flexible numbering services, etc.," stated Glenn Marschel, NetNumber CEO.

About VeriSign Communications Services

VeriSign Communications Services is a division of VeriSign, the trusted provider of Internet infrastructure services for the networked world. VeriSign Communications Services is an inter-carrier service provider offering extensive connectivity, coverage and reliability with a full suite of telco-grade services including SS7, roaming and clearing, number portability, calling name, and IP registry services.

About VeriSign

VeriSign, Inc. (NASDAQ: VRSN) is the trusted provider of Internet and communications infrastructure services for the networked world. Billions of times each day, VeriSign helps companies and consumers all over the world engage in communications and commerce with confidence. Additional news and information about the company is available at www.verisign.com.

About NetNumber

NetNumber provides market-leading converged, next-generation, ENUM, SIP, SS7/C7 and SIGTRAN addressing and routing technology to the global communications industry. The NetNumber TITAN server is licensed and deployed by many of the world's largest mobile-operators, fixed-line carriers, and cable companies as a centralized addressing and routing infrastructure for both TDM and IP-based voice services, messaging services, number-portability services and least-cost routing services. The highly-scalable TITAN Master/Edge architecture provides carriers/operators with a centralized infrastructure for managing addressing and routing data for use by multiple applications that may be widely distributed across a carrier's global network. Additional information is available at www.netnumber.com.

FORWARD-LOOKING STATEMENTS

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 VeriSign's actual results to differ materially from those stated or implied by such forward-looking statements. The potential risks and uncertainties include, among others, the uncertainty of future revenue and profitability; potential fluctuations in quarterly operating results due to such factors as the risk that VeriSign's announcements may not result in additional products, services, customers, profits or revenues; and increased competition and pricing pressures. More information about potential factors that could affect the company's business and financial results is included in VeriSign's filings with the Securities and Exchange Commission, including in the company's Annual Report on Form 10-K for the year ended December 31, 2008 and quarterly reports on Form 10-Q. VeriSign undertakes no obligation to update any of the forward-looking statements after the date of this press release.

© 2009 VeriSign, Inc. All rights reserved. VeriSign, the VeriSign logo, the Checkmark Circle, and other trademarks, service marks, and designs are registered or unregistered trademarks of VeriSign, Inc., and its subsidiaries in the United States and in foreign countries. All other trademarks are property of their respective owners.

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