Default server??? I guess you mean the default "serverlist", isn't it?
Well, there are a few urls to serverlists in
http://www.emule-project.net just take a look at the help section and in there, the servers info. I can't tell you he exact url right now, since I'm not at my computer, so I'm sorry, but you'll have to search a little fopr it ;-)
Greetings.
If you search a little more than "a little", you'll find _tons_ of serverlists :-P