Officially it is international, but in reality each server is divided into 2 groups: russians and others, so biggest russian clan is fighting versus biggest non russian clan for epics
I don't play on x7, but as far as I know its the most lively server right now on rpg. If you won't play support class in good clan, prepare yourself for hard times, because server is getting old.
Total enchant above 70 is considered as very high end game sh1t. So brace yourself ;q