Mystery CDN

I'm struggling to determine which CDN owns the servers in CenturyLink prefix 8.240.0.0/12. During the Call of Duty Season 4 update on June 11th from 06:00 UTC until 08:30 UTC, we had 240 Gbps of traffic steaming into our network from CenturyLink prefix 8.240.0.0/12. We originally thought it was Akamai, but they swear up and down that the servers don't belong to them. Here are some of the HTTP/HTTPS servers in 8.240.0.0/12: 8.253.151.248 8.251.135.126 8.240.167.126 8.240.228.126 8.240.168.126 8.240.126.254 8.240.191.254 -- Clinton Work Airdrie, AB