Seems like an awful lot of us in the irc channel lost access to our slices. www.slicehost.com was unavailable as well. Problem was resolved before I got into digging on routing or anything. Slices didn't reboot so presumably a network/routing outage.
We are waiting on an RFO, but it appears one of our primaries failed over. We show the outage beginning at 0032 GMT and coming back up in 3 minutes, though it may have taken longer for routes to propagate fully. When we have more information, we will relay it.
Just had another one occur. Looks like it was between level3 and xo this time, several hops upstream of you. My home[1] link lost the ability to route to you but my work[2] was fine.
[1]comast -> L3 -> fail -> xo -> you [2]alter -> xo -> you