Limelight Networks has added IPv6 support to its content delivery service with Internet Protocol Version 6 (IPv6) support. 
Specific IPv6 capabilities include:
- Ability to offer dual-stack (IPv6/IPv4) or IPv6 connectivity at company-owned locations
- /32 allocations from the American Registry of Internet Numbers (ARIN), Asia-Pacific Network Information Centre (APNIC), and Reseaux Internet Protocol Europeens (RIPE)
- Full IPv6 transit routes from multiple providers
- Full IPv6 Domain Name Services (DNS)
- IPv6 peering at v6 enabled-exchanges
- IPv6 (dual-stack) capable from any transit or peering or customer origin ingress to the edge
- Customer and end-user IPv6 interface for existing or new IPv4 content.
Limelight Networks will run IPv4 and IPv6 simultaneously across its entire network platform.
http://www.limelightnetworks.com/