Click the `connection` link in the dark blue forum header bar above and this will bring up a new window with what UBR you are connected to. Info in box should look like this if your on ex-telewest and a little bit different if ex-NTL (my IP address has been blanked out)
Connection Information
You appear to be on a Virgin Media Connection
Your IP address is **.**.**.***
Host **.**.**.***.cable.ubr01.brom.blueyonder.co.uk
Then go to:
http://help2.virginmedia.com/help/ge...t_advanced_dns
and look it up in the list at the bottom of the page.
Hope this helps