Argus

Argus was once the homeland of the Draenei. It held the largest Draenei population and was the location of the division between Draenic Legion supporters, and those who decided to flee. Those who joined Velen in the exodus would be named Dranei and would set out to various worlds, eventually to settle upon the Orc world of Draenor, then later Azeroth where they currently inhabit.

Not much is known about the current state of Argus, but it is presumed to be a large Burning Legion stronghold.