The whole tract of mountains was called Abarim, Numbers 33:47, whereof one of the highest was called Nebo, Deuteronomy 32:49, and the top of that, Pisgah, Deuteronomy 34:1.
Related Commentaries of Numbers 27:12
Numbers 27:12
12 And the LORD said unto Moses, Get thee up into this mount Abarim, and see the land which I have given unto the children of Israel.