ATT.NET appears to have an internal routing anomaly
causing RoadRunner (rr.com) to be unreachable to (m)any
AT&T customers. Outage has been in place for several hours.
RoadRunner says they don't know when ATT.NET will have a
fix in place.
Specifically, the problem seems to be affecting all or most of AS7018
(AT&T's backbone) reaching all or most of AS13560 (which includes
www.rr.com and vamx01.mgw.rr.com -- the mail exchanger for rr.com).
It does not seem to be affecting other RoadRunner AS's across the country,
such as AS10311 in San Diego.