Where does “Astano” come from?

Astano (Esperanto) comes from Kazakh Астана, from Persian آستانه, from Persian آسْتَانَه, from Middle Persian ʾstʾnk'.

Ancestry of “Astano”, step by step

Step	Language	Word	Meaning
1	Kazakh	Астана	capital
2	Persian	آستانه	threshold
3	Persian	آسْتَانَه	—
4	Middle Persian	ʾstʾnk'	—

Astano — Etymology, Origin & Word History | Etymology Explorer