Joe Abley wrote:
I think you're mistaken about the server being off-line, since I can see it just fine from many places. The RIPE NCC dnsmon tool can also see it from its various probes: http://dnsmon.ripe.net/dns-servmon/server/?server=h.gtld-servers.net&show=SHOW
That's old data. This is a recent incident. (IIRC, the most recent data isn't publicly available). It's rolled over and you can see it going down in the live interface now: http://dnsmon.ripe.net/dns-servmon/server/plot?type=drops&server=h.gtld-servers.net&day=15&month=6&year=2006&hour=6&period=2h&shift=%2B6h
I don't know any details about how that servers is deployed, however, so it's non-trivial to draw more conclusions about what problems you're having. Perhaps a single anycast node has some issues, or perhaps 192.54.112.0/24 has flapped a bit, and has been suppressed due to dampening in your neck of the woods.
I did (and do) check on multiple ASs that I run and asked a few others to check, also checked looking glasses and so on. But anyway, it's back now, so nothing to see. Obviously a local problem of some sort. Will