In detail^
https://www.v-stetsyuk.name/en/Topo/Iran.html
There on the map, the place names of Kurdish origin are marked by red asterisks. Orange asterisks refer to Kurdish places having the partial word Maydan. Blue ones – Afghan place names. Green – Ossetic place names, brown – others, yellow – doubtful.

The common Iranian space is surrounded by yellow. The borders of the Ossetic Urheimat are marked by green, the Kurdish Urheimat is surrounded by red and the Afghan Urheimat is by violet.

More: "http://www.v-stetsyuk.name/en/Topo/Iran.html"