Are any of these servers what you are looking for?

Servers with "SERVER" and "TEST" in the name:
[WoF] war3 plugin test server
YCN-Hosting.com | Test Server
RABEX PL Server - TEST
[PR v0.981] [3dAC] Mini-Mod Test Server
COD4_MW-Testserver-www.KCZ-Server.de
nitrado.net Left4Dead 2 - Testserver
GameNest.ru Test Server
BSF Testserver
Konzument.sk~[Test2 server]
OVH test server