Internet users on Time Warner, MSN Dialup, NetZero, Juno, and other ISPs may find that they can’t access certain websites hosted through Cogent. From what I am hearing, this has been going on since 5:50AM EST this morning.

Without getting into all of the technical details this is the result of a dispute between Tier 1 ISPs Cogent and Level 3 which involved a peering agreement. The way Cogent has been operating allowed them to sell bandwidth very cheaply — and Level 3 didn’t like it.

I’m on Time Warner Cable. All day I haven’t been able to access several major sites including the Drudge Report or Weather Underground. However, I have noticed no drop in revenue from my own sites. In fact, today looks like its going to one of my best days yet.