gandalf and the name incanus

[Raynor]

In the Unfinished Tales, it is noted that:

Originally Posted by The Istari, UT

The name Incánus is apparently "alien," that is neither Westron, nor Elvish (Sindarin or Quenya), nor explicable by the surviving tongues of Northern Men. A note in the Thain's Book says that it is a form adapted to Quenya of a word in the tongue of the Haradrim meaning simply "North-spy" (Inka + nush).

Given the etymology of the name and its meaning, I would say it reffers completely to Harad.