Chaotic Dreams

GameSpy's PlanetUnreal: ChaosUT2 PUB - 69.93.77.87:7777
Chaotic Dreams Public Server - |TOC| -66.153.113.24:7777
Flak's Fraggalonia #2 Total Chaos - 66.165.113.38:7777
Twisted's Place Chaos CTF - 209.176.193.13:7888
Twisted's Place Chaos ONS - 209.176.193.13:7777
BC UT2004 Server - 69.93.37.10:7777
=WD= ChaosUT2 www.wardragons.com - 66.165.113.189:7777
=WD= ChaosUT2 www.wardragons.com #2 - 66.165.113.190:7777
SUDREAL ][ CHAOS INVASION - 66.93.110.170:7777
|kush!|-|TDM|-|The Aftermath| - 64.27.10.83:7777
TRINITY's ChaosUT2 - 24.196.113.62:7777

Well my guess would be because not all the servers run all the gametypes at the same time. If you go through all the popular gametypes most of those servers should show up at any given time. But I can only speak for Twisted's Place. Twisted's is down right now for some minor maintenance (complete reinstall). It should be back up by the end of the day.