Today, my phone has been ringing constantly with different customers reporting that some websites are not working, pings are failing nslookup is failing etc.
This is happening (confirmed) with Eircom and BT Ireland (Formally EsatBT). So far, setting the local DNS servers to use the root hosts has fixed the problem.
I have yet to find out why this is happening… I wonder if this is DNS poisoning? I better go off and read some more on that 🙂