I believe that's a few months after Netflix started heavily using Cogent as a provider, and thus Cogent's peering disputes with Verizon and Comcast began:
My company uses Cogent as an ISP, and remote workers have had nothing but trouble trying to use VPN and other connections back home via Comcast or Verizon because the Cogent/Comcast+Verizon peering points are severely overloaded, dropping packets at a 5%+ clip at some times during the day.
http://gigaom.com/2013/06/17/having-problems-with-your-netfl...
My company uses Cogent as an ISP, and remote workers have had nothing but trouble trying to use VPN and other connections back home via Comcast or Verizon because the Cogent/Comcast+Verizon peering points are severely overloaded, dropping packets at a 5%+ clip at some times during the day.