Were there Ents in areas not covered by LOTR?

[Noxomanus]

We are losing the subject here,it's basically that I wonder if the Fangorn Ents could realistically be the only ones remaining.I really don't think so,I mean it's really possible there are Ents further south or east then Harad or Khand. Wouldn't ik be likely Ents awakened all over Arda?When considering the Entwives,Tolkien probably only spoke about the ones inhabiting the Brown Lands and not those of entire Arda!