Leading ASP Corio Selects UltraDNS to Manage Domain Name System (DNS) for Hosted Customer Applications

UltraDNS' Carrier-Class, Full Fail-Over Managed DNS Service Improves Reliability and Performance of DNS Name/IP Address Resolution for Corio Customer Applications

SAN MATEO, Calif., April 10, 2001 - UltraDNS(tm) Corporation, the leading Directory Infrastructure Services Provider (DISP), which guarantees mission-critical directory reliability and performance, announced today that Corio, Inc. (Nasdaq: CRIO), a leading enterprise application service provider (ASP), has selected UltraDNS' Managed DNS(tm) Service to enhance its infrastructure for hosting enterprise applications. The UltraDNS Managed DNS Service is the first fully-integrated, outsourced service for the Internet's Domain Name System (DNS) that is designed to ensure Internet users and application connections are always available and always correct.

Corio implements, integrates, hosts, manages and supports a suite of scalable, best-of-breed enterprise software applications from leading vendors including Oracle, PeopleSoft, BroadVision, SAP, Microsoft, and Commerce One. Since application availability is critical, Corio selected UltraDNS Corporation's Managed DNS Service to ensure its Corio Intelligent Infrastructure (CII), a modular infrastructure designed specifically to deliver applications over the network, delivers the highest levels of security, performance and service levels.

The Managed DNS Service significantly enhances Internet application availability and performance by ensuring that connections to those applications are always made. When a customer attempts to access a Corio-hosted application, the customer's DNS query, which identifies the servers that run the application, will be directed to the UltraDNS global DNS server network where it automatically gets routed to the closest server for resolution. By employing advanced fail-over mechanisms and reliable Oracle database and replication technology, the Managed DNS service is able to deliver high performance DNS resolution with SLA backed availability.

"Corio is an ideal partner for UltraDNS. They deliver application service for mission-critical business activities and we provide the infrastructure that ensures the speed and reliability demanded by those applications," noted Ben Petro, chief marketing officer for UltraDNS.

By enabling quick and accurate application access, the Managed DNS Service plays a vital role in the performance of Corio-hosted applications.

"UltraDNS provides us the guaranteed, rapid directory resolution that we require to deliver applications to our customers with the highest reliability," said Brad Boston, Corio's executive vice president of operations. "By outsourcing our DNS system to UltraDNS, we have significantly boosted the reliability and performance of our Corio Intelligent Infrastructure."

"Corio is well-known as a powerhouse application service provider," said Eric Morris, vice president of sales for UltraDNS. "Corio not only represents a key customer win for UltraDNS, but also highlights the significant traction we are experiencing in penetrating large enterprises and ASPs."

About Corio, Inc.

Corio (NASDAQ: CRIO), a leading enterprise application service provider, delivers, hosts and manages best-of-breed enterprise applications and infrastructure services for a monthly fee. Corio's application suite, the Corio Intelligent Enterprise, features leading vendors such as BroadVision, Commerce One, E.piphany, Microsoft, Moai, Oracle, PeopleSoft, Requisite, SAP and Siebel Systems. Corio's infrastructure suite, the Corio Intelligent Infrastructure, features modular application delivery and support services. Corio is headquartered in San Carlos, Calif., with 10 offices across the U.S. Additional information about Corio is available at http://www.corio.com.

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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