UltraDNS to Offer Service to MSN Hotmail, Boosting DNS Reliability and Performance

UltraDNS Managed DNS Service Features 100 Percent Uptime Guarantee, Backed by a Comprehensive Service Level Agreement (SLA)

SAN MATEO, Calif. Jun 1, 2001 UltraDNS™ Corporation, the leading Directory Infrastructure Services Provider (DISP), which guarantees mission-critical directory reliability and performance, announced today that UltraDNS' Managed DNS™ Service will be used by MSN as a backup provider of DNS services to MSN Hotmail, the world's largest Web-based e-mail service, to ensure the high reliability that MSN Hotmail users expect. Acting as an outsourced Domain Name System (DNS) provider for the MSN Hotmail domain, Managed DNS Service will enhance Hotmail user experience by delivering unparalleled levels of web site reliability, providing high performance to support enhanced content delivery, and virtually eliminating failures caused by DNS error.

With over 100 million active users, MSN Hotmail resolves an enormous volume of DNS queries - the process that translates a URL typed into a browser (http://www.hotmail.com) into the IP address for the server where the content is located. By supplementing MSN's primary DNS services with its global, fail-safe Managed DNS Service, UltraDNS delivers the fastest web site response rate available. The UltraDNS Managed DNS Service is the first in the industry with a 100 percent uptime guarantee, backed by a comprehensive Service Level Agreement (SLA).

"MSN Hotmail has built its success on delivering to users great core features and integration with other MSN communication services while focusing on delivering a quality service to our users by providing the highest levels of speed and reliability," said Michael Myers, director of MSN Network Operations at Microsoft Corp. "By utilizing UltraDNS' Managed DNS Service, we can help assure our users a quicker, more accurate and reliable response from MSN Hotmail."

Ben Petro, chief executive officer at UltraDNS, noted, "When your business is inseparable from the Internet, as is true for MSN Hotmail, it's important to build your brand on the best possible infrastructure. By choosing our Managed DNS Service to serve as a key backup to the Hotmail domain, MSN is strengthening its directory infrastructure. This will not only support its extensive user base today, but will also enable Hotmail to keep pace with next-generation, on-demand information exchange applications. Our Managed DNS Service will scale easily to meet Hotmail user demand moving forward."

The UltraDNS Managed DNS Service is a fully-integrated, outsourced infrastructure for the Domain Name System that significantly improves web site quality-of-service. Hosted on the UltraDNS global server network, it is designed to solve the reliability, performance and security limitations inherent in today's DNS systems. The Service employs advanced fail-over mechanisms to ensure that all DNS queries are processed, guaranteeing that every web user gets connected reliably. By utilizing advanced routing technologies, all DNS queries are sent to the closest available server in the UltraDNS network, enabling customers to experience the fastest possible web site response.

UltraDNS solutions provide the core directory service capabilities that enable reliable operation of today's on-demand information-exchange applications. These solutions: enhance the performance, availability and profitability of web enterprises; reduce costs; increase customer acquisition, retention, and satisfaction; scale cost-effectively to meet global demand; guarantee reliability; and give network administrators direct control via a powerful, browser-based interface.

The foundation for all UltraDNS solutions is a high-performance Directory Service Platform that integrates the Company's cutting-edge hardware, software, Internet and networking innovations, and leverages its proprietary, patented technologies. UltraDNS has deployed this platform on a global, fail-safe server network, which currently supports the UltraDNS Managed DNS™ Service, the industry's first SLA-guaranteed, 100% reliable, outsourced service for running the Internet's Domain Name System (DNS).

About UltraDNS
UltraDNS Corporation is the world's leading Managed DNS Service Provider, delivering superior security, reliability and performance to organizations that rely on DNS for their critical business processes, applications and services. With the growth in e-commerce and the emergence of advanced DNS-based communication and supply chain management services, organizations can no longer rely on traditional approaches to DNS. On October 20th, 2005 UltraDNS launched the DNS Shield™ in partnership with major Internet Service Providers (ISPs) including AOL, Earthlink, Time Warner and Yahoo to provide the highest level of reliability and security to over 100 million Internet users.

UltraDNS provides a range of global and local DNS solutions - both managed services and custom infrastructure - built on its unique Directory Services Platform and proprietary, patented technologies. Through its thousands of enterprise, service provider and TLD infrastructure customers, UltraDNS powers the resolution of over 15 million domains around the globe. UltraDNS has offices in California, Virginia, Arizona, Chicago and the UK. For more information please visit www.ultradns.com.

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