Level 3 owns and maintains over 39,500 intercity route miles and makes more than 77,000 intercity route miles available to our customers. The Level 3 Network today operates as one of the largest IP transit networks in North America and Europe. We deliver services to customers in major markets across the United States and Europe, serving a substantial number of the worlds largest and most sophisticated communications companies, including interexchange carriers, local phone companies, European PTTs, cable operators, ISPs, wireless companies, content providers, and media and entertainment companies, as well as enterprise customers.

The Global Crossing network contains over 100,000 route miles of optical cable in more than 60 countries around the world. The tier-1 backbone network is constructed with the latest dense wavelength division multiplexing (DWDM) technology. That means easy expandability into the photonic future. And there's no tolerance for down-time, either. A fault-tolerant design ensures our uninterrupted network availability for your critical business applications.

Cogent's end-to-end optical network consists of multiple metropolitan IP-over-WDM fiber rings located in Cogent's major markets throughout the United States and Europe. Cogent currently has a presence in over 100 markets throughout North America and Europe. Cogent's network provides each building or data center with up to 5 Gbit/s of dedicated bandwidth. Layer 3 edge routers in each building are connected to Cisco Layer 3 Terabit core routers over two diverse optical paths. These core routers are tied together via an international backbone network consisting of multiple 10 Gbit/s DWDM optical links.

Sprint is one of the world’s largest Tier 1 IP networks - connecting over 25% of the world's Internet traffic. The Sprint IP backbone has more Autonomous System network connections than any other, with high-speed links that operate up to OC-192 / STM-64 - the fastest speeds available over IP today. Sprint operates more than 1,100 POPs in over 100 countries throughout the world, and dial IP service is available from almost 17,000 POPs worldwide. You can depend on the Sprint IP network for your most mission-critical business operations. Whatever your size, the Sprint IP network can help you extend market reach, lower costs, and leverage the Internet as a means to connect remote employees and business partners to enterprise applications.