Soccer Dad

Was Bilam a prophet?

Quoting from memory, DovBear recently told us that the accepted (Jewish)view that Bilam was a prophet was not as unanimous as many thought. Toward that end he quoted the classic commentator Ramban (Nachmanides) from memory on the question. DovBear wrote that the Ramban on Bamidbar (Numbers) 31:8 states that the Jews could not have killed a prophet of Hashem (G-d). While the dissenting view of an individual commentator, even one of the stature of the Ramban, wouldn't necessarily change a consensus. I thought it would be interesting.
So I looked up what the Ramban wrote. I couldn't find his commentary on that possuk (passage). My best guess is that DovBear remembered a commentary who surprised him by asserting that Bilaam was not a prophet and ascribed it to the Ramban. (I've done things like that.) Or that the Ramban mentioned it in another place.
However during my search I found another Ramban, that says explicitly that Bilaam was indeed a prophet. That was on possuk 24:1 in Bamidbar. I'm curious now, to whom was DovBear referring?