There's still no connectivity to Facebook's DNS servers:
> traceroute a.ns.facebook.com
traceroute to a.ns.facebook.com (129.134.30.12), 30 hops max, 60 byte packets
1 dsldevice.attlocal.net (192.168.1.254) 0.484 ms 0.474 ms 0.422 ms
2 107-131-124-1.lightspeed.sntcca.sbcglobal.net (107.131.124.1) 1.592 ms 1.657 ms 1.607 ms
3 71.148.149.196 (71.148.149.196) 1.676 ms 1.697 ms 1.705 ms
4 12.242.105.110 (12.242.105.110) 11.446 ms 11.482 ms 11.328 ms
5 12.122.163.34 (12.122.163.34) 7.641 ms 7.668 ms 11.438 ms
6 cr83.sj2ca.ip.att.net (12.122.158.9) 4.025 ms 3.368 ms 3.394 ms
7 * * *
...
So they're hours into this outage and still haven't re-established connectivity to their own DNS servers.
