Where can I get data about geo objects of the Russian Federation?

Question

Cartography

An updated source of coordinates and polygons of RF objects (cities, regions, etc.) is needed.
There is a list of all objects of the Russian Federation with their FIAS, KLADR. The task is to make an interactive map of the Russian Federation. I thought to use OpenStreetMap, but the question of how to map the data I have (FIAS / KLADR) has not been resolved.
If someone solved a similar problem can share.
Or what options should I consider or in which direction to look?

Answer 1

Build an address hierarchy in OSM and match it with the same one in FIAS, not 5 minutes of course, but not building a rocket either.
From the open, once Scondo did this, but did not bring it to the final (but this is not certain) - https://github.com/Scondo/fiosm
Two existing FIAS validators for OSM confirm that this is possible.