Is it possible to scan all the gmod servers names?

Im trying to play with my freind but we cant play cause when you make a server its visable thru the servers list. Is it possible to scan the servers names? is there a tool? can someone make a tool?

It is not. Just tell your friend to go to www.whatsmyip.org and give you that IP to do a direct connect with.
To direct connect, type “connect ip” in console, IP being where the IP Address goes.