A treaty between Mursili and Kupanta-Kurunta of Mira later lists the Astarpa as the border of Kupanta-Kurunta's client region of Kuwaliya.
The general consensus among scholars is that Luwian was spoken—to varying degrees—across a large portion of western Anatolia, including Troy (Wilusa), the Seha River Land (Sēḫa ~ Sēḫariya, i.e., the Greek Hermos river and Kaikos valley), and the Mira-Kuwaliya kingdom with its core being the Maeander valley.