Here is something made by Luc@s : http://servers.assaultcu.be/
It give you the full list of servers, and who is online on them, you can also click on "Search for online clan" at the top left to see which clan players are online and where. You can also see scores without being on the servers.
I found this very usefull
Original thread : http://fra.assaultcu.be/showthread.php?tid=145