We are under DDoS at the moment. This looks like a larger version of a smaller DDoS yesterday which was possibly a test run.
Currently we are turning up mitigation and investigating.
Please bear with us.
Update 21:19 EST
This DDoS attack is different from our previous ones in that it looks as if the target is us, easyDNS, not one of our clients.
It is proving difficult to isolate the real traffic from the DDoS traffic, we are having some success now and are working on routing more DNS traffic through those nodes that are successfully mitigating.
Some customers are adding out-of-band nameservers and loading their zonedata from here (which is working), as outlined in:
We'll be posting another update shortly.