Late Update

London Bombings

Our sympathies to all those affected by this morning's bombings in London, UK.
On behalf of the SANS ISC, we're saddened by this terrible tragedy, and feel
for your loss.

.us TLD DNS resolvability issues

We're monitoring some spotty DNS resolvability problems from a handful of
ISPs for sites in the .us zone--everything from some sites working to an entire
loss of .us visibility. The cause seems to be a confluence of internet
latency issues coupled with DNS caches storing the lack of data as
actual data, although we don't currently have an "official answer".