Here's whats known so far:
* Most AT&T DSL (largest ISP in the US, 15.5% of US Internet users) customers ARE currently not able to access img.4chan.org (/b/ & r9k)
*There are a few AT&T DSL users that are NOT affected. Kansas, Florida, and Ohio are where we've gotten those reports. AT&T is a megacorp made from the smaller pieces it was broken down into in the 80s- different equipment and such.
*AT&T Mobility (Cell Phones) and AT&T Uverse customers ARE NOT AFFECTED.
*It IS NOT a DNS issue. Affected people have tried OpenDNS with no success.
*It IS very visible on a traceroute. It drops within the AT&T network.
*It DOES NOT affect AT&Ts Tier 1 backbone (major bandwidth backbone in US).
*It DOES NOT affect other servers on 4chan.
*People HAVE called customer service (allegedly) and confirmed a block, but agents have denied further info.
Read More