UltraDNS Technology Helps Kelley Blue Book Increase Web Site Traffic

Automotive Web Site Reaps the Benefits of UltraDNS' Global Network and Guaranteed 100 Percent Uptime

SAN MATEO, Calif., June 18, 2003 -- UltraDNS™ Corporation, the world's leading Managed DNS Service Provider, today announced that Kelley Blue Book (www.kbb.com), the number one new and used automotive information Web site, has selected UltraDNS' Managed DNS ServiceT to assure 100 percent uptime and reliability of its Web presence. Serving as an outsourced Domain Name System (DNS) provider, UltraDNS has enhanced Kelley Blue Book's kbb.com by eliminating failures caused by DNS error as well as increase its Web site traffic.

"Every month, millions of consumers access Kelley Blue Book's Web site to obtain timely and accurate vehicle information," said John Parady, CTO, Kelley Blue Book. "UltraDNS allows us to focus on what we do best - deliver vehicle buyers the most trusted automotive research available. Our success depends on consumers being able to access that objective information online and UltraDNS helps make that happen."

"The proprietary technology that the UltraDNS platform utilizes solves the inherent limitations of standard DNS deployments to include packet loss, security vulnerabilities and management issues," said Ben Petro, president and CEO, UltraDNS. "As the automotive information leader, Kelley Blue Book understands the importance of DNS and its connection to web site reliability and performance."

About Kelley Blue Book
Kelley Blue Book is the most trusted vehicle information resource by both consumers and the auto industry, providing research tools and up-to-date pricing on thousands of used and new vehicles. Since 1926, car buyers and sellers have relied upon Kelley Blue Book for authoritative and unbiased information to make well-informed automotive decisions. The company offers objective vehicle pricing via products and services including the famous Blue Book Official Guide, software and Internet site, kbb.com. Kbb.com has been rated the No. 1 automotive information site by Nielsen//NetRatings as well as No. 1 and first visited automotive site by J.D. Power and Associates five years running. No other medium reaches more in-market car-buyers than kbb.com; one in every four American car-buyers complete their research on kbb.com.

About UltraDNS
Based in San Mateo, Calif., UltraDNS Corporation is the world's leading Managed DNS Service Provider with over five million domains currently under management, delivering solutions that enhance the reliability and performance of the world's largest directories and the mission-critical applications that access them. UltraDNS offers highly scalable solutions - both as a managed services provider and as a developer of custom infrastructure solutions - built on its unique Directory Services Platform and proprietary, patented technologies. The company operates its own global, fail-safe server network, which supports the UltraDNS Managed DNS Service, the industry's first 100 percent reliable Domain Name System (DNS) name/IP address resolution service, backed by a full service level (SLA) guarantee. UltraDNS infrastructure services, such as Managed DNS, address the growing need for quick, reliable response to directory queries in today's converging Internet/telecom environment. By connecting a user's information request to the proper directory and assuring a quick, accurate response, UltraDNS plays a key enabling role in delivering content, information and data to users when, where and on whatever device they choose. The company was founded in 1999 and is funded by Reuters Group PLC, Vantage Point Venture Partners and New Enterprise Associates. Customers include Oracle, MSN Hotmail, Forbes.com, Handspring and Petco. For more information visit www.neustarultraservices.biz.

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