From this sticky post in Tech Support:
http://forums.hitechcreations.com/forums/showthread.php?s=&threadid=68316I quote our Technical Know-it-all, Skuzzy:
"First, the server IP addresses, to be used for traces/ping plots.
Early, Mid, Late War Orange Main Arena Server Address: 206.16.60.39
Axis vs Allies, Training, Dueling, Late War Blue: 206.16.60.38
Special Events: 206.16.60.37
The current port range for all arenas in Aces High is 2000-6000, inclusive, for UDP and TCP. Aces High will use a random subset of those ports for all online play (8 Player included)."
HomePage and forums would be hitechcreations.com I do believe.