EdgeCast Networks officially announced its " .. licensed CDN program. Following two years of success and traction within the carrier community, EdgeCast is the first CDN provider to successfully build a production CDN on behalf of a tier one telecommunications carrier .. The company has reached the General Acceptance milestone in its design, development, and deployment of a licensed CDN for a tier one U.S. telecommunications carrier. This comes just three months after EdgeCast signed a licensing agreement with Pacnet — one of Asia’s largest telecommunications carriers — to power Pacnet’s CDN service."
Earlier this year, EdgeCast and PeerApp announced a joint CDN and transparent cache solution (here).
".. Two weeks ago, EdgeCast transferred control to the U.S. carrier of its own fully functional, high-performance CDN with more than a dozen points of presence across the U.S. The EdgeCast software covers the entire CDN stack: content delivery for caching and streaming; load balancing; network and server management; reporting; customer and account provisioning; technical support; and other back office functionality".
According to Rob Powell from Telecom Rumblings, the unnamed carrier is AT&T (see "EdgeCast Takes the Carrier Plunge" - here). AT&T is also using a CDN solution from Cotendo (here) that was recently acquired by Akamai (here).
See "EdgeCast launches licensed CDN program following global deployment of two major carrier CDNs" - here.