Arbinet IP Solutions Enhances Its OptimizedIP(SM) Service

Increased demand for high quality Internet access continues to grow as more critical applications rely on Internet Protocol (IP) technology. Traditional BGP provides routing based on the shortest AS path and ignores congestion and key quality metrics such as latency, packet loss and jitter. OptimizedIP V2 addresses these issues by utilizing sophisticated algorithmic configurations to route traffic over the Internet. The service works by determining test IP addresses for networks from the global BGP routing tables and uses Internet Control Message Protocol (ICMP) to ping packets to these test addresses. The results are then analyzed by the OptimizedIP system as often as every 15 minutes. Routing is prioritized based on lowest packet loss, round trip delay and jitter. This process occurs for each individual query ensuring that no matter where the packets need to go, they will get to the destination on the optimal and most efficient path. With only one connection, one routing table and no additional ASN hops, OptimizedIP provides streamlined and optimized Internet service with simultaneous access to multiple suppliers.

"Although IP transit is largely commoditized, our service and test results prove that not all networks are designed equally, and not all networks provide optimal paths for reliably delivering sensitive data," commented Sue Su, Vice President of Arbinet Data Services. "Even the best ISP cannot control the entire path to the end host because it depends on its peering and customer networks. OptimizedIP adds value to our customers' IP service offerings and helps them to differentiate their services, improve network redundancy, performance and profitability."

OptimizedIP V2 is also available as a turnkey software solution which can be deployed in any IP network that requires enhanced routing performance. It saves the hassles and cost of in-house manual routing manipulation and engineered optimization. ISPs and providers of mission critical applications anywhere in the world can take advantage of Arbinet's intelligent technology to optimize routing among their existing ISP suppliers and offer premium Internet services to their end customers. The service offers enhanced intelligent tools developed for in-depth network routing analysis and testing.

OptimizedIP is one of three IP solution products offered by Arbinet. Other products include PrimeIP(SM), which provides one-stop IP transit supplier management and SelectIP(SM), an efficient peering solution that offers flexible access to on-net routes of multiple networks via one connection. All Arbinet's IP Solutions feature a single interconnect, contract, invoice and support interface, and provide access to multiple suppliers and direct peers without incurring an additional ASN hop. Arbinet's IP Solutions are available in Europe, North America and Asia. The company is offering all new customers who sign up before December 31, 2009 a free trial for a limited time. For more information please email datasales@arbinet.com or visit www.arbinet.com.

About Arbinet

Arbinet is a leading provider of international voice and IP solutions to carriers and service providers globally. Arbinet's voice termination and origination options include a traditional wholesale model called Arbinet Carrier Services; thexchange(TM), the industry's leading marketplace for buying and selling voice communications; and Private Exchange(SM) ,an easy to use, low-risk outsourcing service. With more than 1100 carriers across the world connected to the Arbinet Network, Arbinet combines global scale with sophisticated platform intelligence, call routing and industry leading credit management and settlement capabilities. Customers and suppliers include many leading fixed line, mobile, wholesale and VoIP carriers as well as calling card, ISPs and content providers around the world who buy and sell voice and IP telecommunications capacity and content. The company can be reached at +1.917.320.2000 or by email at sales@arbinet.com.

Forward-Looking Statements

This press release may contain forward-looking statements regarding anticipated future revenues, growth, capital expenditures, management's future expansion plans, expected product and service developments or enhancements, discussions of strategy, and future operating results. Various risks and uncertainties may cause Arbinet's actual results to differ materially. Please refer to Part I, Item 1A of the Company's Annual Report on Form 10-K, filed with the Securities and Exchange Commission on March 16, 2009, and other filings that have been filed with the Securities and Exchange Commission. Arbinet assumes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise and such statements are current only as of the date they are made.