AT&T v 4chan
Posted by FuzzyDave 9 years ago, closed 9 years ago
AT&T has the right to block access to /b/
It goes past AT&T blocking it for their customers.
Hugh2d2: AT&T is a BACKBONE provider. They can block it for multiple ISP's. (Now it looks like they were blocking it for a DDOS issue. Not sure I believe that, but...)  
crataegus: They also claimed to be blocking it for viruses.