AT&T has completed a state-of-the-art OC-192c National IP Network, providing for diversely routed OC-192c circuits engineered to facilitate fiber and hardware redundancies and accommodate any network or hardware facility failures. AT&T Dedicated Internet Access is based on a Cisco-Powered Network.

The Level 3 Dedicated Internet Access service combines essential enterprise Internet features with world-class global Internet reach and scalability, for a high-performance Internet solution for enterprises of all sizes. The Dedicated Internet Access service is designed to fit the diverse requirements of enterprises that demand high-performance access to the global Internet marketplace.

Secure, reliable, and highly available, MCI's 446,000-mile IP network connects 150 countries on six continents.

The SAVVIS IP network spans 105 cities in 47 countries, encompassing the U.S., Canada, Latin America, Europe, The Middle East, Asia and the Pacific Rim. SAVVIS uses network-based routing, security and quality services, delivered on an as-needed utility basis, and are supported by an automated service model that further reduces costs and enhances the customer experience.