We have received a few reports from customers who have services behind Cogent's network having difficulty with our services. Today around 3:08PM Pacific time, there were some reports on the NANOG mailing list that Cogent and Sprint are having a peering disagreement, which has led to a termination of said peering arrangement. The consequence is that Cogent has become isolated from parts of the internet at large. Since one of our BGP neighbors is Sprint, this disagreement between the two companies is affecting us.
We don't know who is at fault, but we are working to see if there's anything we can do to route around this. The last high-profile depeering with Cogent was with Level3, so this is not an isolated incident. For more information on the current matter:
* http://www.merit.edu/mail.archives/nano ... html#12448
The only thing we can really do is recommend that any of our customers with services behind Cogent is to contact whoever is hosting/providing those services and make them aware that Cogent's depeering is affecting you.