This is for the players!Open your games configuration file, usually gamename.ini (unrealtournament.ini), find the sections below and edit them as described:
[UBrowserAll]
ListFactories[0]=UBrowser.UBrowserGSpyFact,MasterServerAddress=master.333networks.com,MasterServerTCPPort=28900,Region=0,GameName=ut
ListFactories[1]=UBrowser.UBrowserGSpyFact,MasterServerAddress=master.noccer.de,MasterServerTCPPort=28900,Region=0,GameName=ut
ListFactories[2]=UBrowser.UBrowserGSpyFact,MasterServerAddress=utmaster.epicgames.com,MasterServerTCPPort=28900,Region=0,GameName=ut
bFallbackFactories=False
This is also very important to make sure that the updateserver does not mix up your settings.
[UBrowser.UBrowserMainClientWindow]
bKeepMasterServer=True
Save your config and browse through the game as fast as light can't get [

]
This is for servers!Stop your server and open the server's configuration file, usually gamename.ini (unrealtournament.ini)
Go to
[Engine.GameEngine]
and delete these lines:
ServerActors=IpServer.UdpServerUplink MasterServerAddress=master0.gamespy.com MasterServerPort=27900
ServerActors=IpServer.UdpServerUplink MasterServerAddress=master.mplayer.com MasterServerPort=27900
replace them with
ServerActors=IpServer.UdpServerUplink MasterServerAddress=utmaster.epicgames.com MasterServerPort=27900
ServerActors=IpServer.UdpServerUplink MasterServerAddress=master.noccer.de MasterServerPort=27900
ServerActors=IpServer.UdpServerUplink MasterServerAddress=master.333networks.com MasterServerPort=27900
Now your server is ready for 333networks. It will uplink to epicgames, 333networks and noccer.de