Been using BT Parental Controls for quite awhile
I need to add all prefix to doamins ?
The GUI doesnt allow *.domain.com only www.domain.com or http://domain.com
Have you tried entering the second form - http://domain.com/ - and seeing if that works?
[ Sorry to ask the obvious question, but it appears to work here for a whitelisted site where a bunch of different hosts on the site are referenced by the web pages served by www.domain.com, e.g. up.domain.com, o.domain.com ]