TOLL BROTHERS INCREASES UTILIZATION OF ULTRADNS PRODUCT SUITE

Leading home builder's greater reliance on the Internet channel requires efficient and reliable domain management provided by UltraDNS solutions

BRISBANE, Calif., May 24, 2005 -- UltraDNS™ Corporation, the leading Managed DNS Service Provider, today announced that Toll Brothers (NYSE:TOL), the nation's leading provider of luxury homes, has implemented advanced Managed DNS Services and is adding web redirection services to support their growing complex business requirements. As a premiere developer of outstanding luxury communities in 20 states with offices and markets distributed across the country, Toll Brothers increasingly relies on its web presence to provide essential services.

"We selected UltraDNS in 2003 when our requirements mandated the management of 300 domains powered by a carrier class DNS service," said David Ragonese, Director of System and Database Architecture at Toll Brothers. "No other solution or service provider was able to address our management requirements and provide the near instant propagation of DNS changes. Since our initial deployment, our Internet business has grown substantially to over 1,100 domains, and UltraDNS has scaled both with its technology and services." UltraDNS enables Toll Brothers to rely on the world's most robust Domain Name System (DNS) infrastructure to reliably resolve requests for all of its web properties. Guaranteed by the UltraDNS 100% Service Level Agreement (SLA), Toll Brothers is able to efficiently manage their specific business operations through an intuitive Graphical User Interface (GUI) where engineers can hierarchically manage DNS records.

"As businesses recognize the revenue and cost-savings potential derived from their Internet channel, they increasingly require more complex and sophisticated DNS infrastructure," said Ben Petro, President and CEO of UltraDNS. "UltraDNS will continue to expand our advanced management tools and global network to enable technically progressive organizations, such as Toll Brothers, to address their Internet requirements."

About Toll Brothers, Inc Toll Brothers, Inc. is the nation's leading builder of luxury homes. The Company began business in 1967 and became a public company in 1986. Its common stock is listed on the New York Stock Exchange and the Pacific Exchange under the symbol "TOL". The Company serves move-up, empty-nester, active-adult and second-home home buyers and operates in 20 states: Arizona, California, Colorado, Connecticut, Delaware, Florida, Illinois, Massachusetts, Maryland, Michigan, Nevada, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Texas, and Virginia.

Toll Brothers builds luxury single-family detached and attached home communities, master planned luxury residential resort-style golf communities and urban low, mid- and high-rise communities, principally on land it develops and improves. The Company operates its own architectural, engineering, mortgage, title, land development and land sale, golf course development and management, home security, landscape, cable T.V. and broadband Internet delivery subsidiaries. The Company also operates its own lumber distribution, and house component assembly and manufacturing operations.

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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