City data: GeoNames, https://www.geonames.org/
Source: cities15000.zip and alternateNamesV2.zip, downloaded 2026-10-24.
Creative Commons Attribution 4.0: https://creativecommons.org/licenses/by/4.0/
Modified: Russian preferred names, aliases, filtering of city districts/historic/abandoned places, split by country; compact coordinates for local nearest-city suggestions.
Not an exhaustive list of settlements or visa application centres.