[dns-operations] ultradns problems on udns[12].ultradns.net? (amazon.co.uk hard to resolve)

[Jaap Akkerhuis]

    Now I understood that ultradns uses anycast, so I assume this
    is a rather large scale DoS effort.

I don't want to speculate what the cause was, but it seems that a
couple of untradns servers did had some problems during that time
according to
http://dnsmon.ripe.net/dns-servmon/domain/plot?domain=org&day=23&month=6&year=2007&hour=12&period=12h&plot%2F=SHOW

	jaap