An issue has risen that certain servers have been impossible to find in the server listings. Should this ever arise, keep note that Apex has quick links for connecting. Open your console, and type 'connect ' followed by any of these URL's for their corresponding servers:

rp.apex.gs - DarkRP
ttt.apex.gs - TTT
jb.apex.gs - Jailbreak
sis.apex.gs - Stop it, Slender!