Hi nusenu,
I would do it if you could send me the URL from where you downloaded the input file used by onionoo (maxmind page) and date/version (if it changed since the statement made above).
As specified here [1], the GeoIP databases shoud be taken from [2] and [3]. In our case it's only [3]. I don't now the reality of the onionoo.torproject.org, but it should not differ from INSTALL file.
It seems they are using the first "descr" line they find as AS name.
Examples:
http://bgp.he.net/AS1759#_whois https://atlas.torproject.org/#details/337B7E307550F48DCDADA7481FA8436B2FCDAD...
http://bgp.he.net/AS8708#_whois https://atlas.torproject.org/#details/64490AC626E728B0BB29DBA3EE1E98DA8982F4...
Wow, nice finding! It looks like it's a bug (or just wrong logic) on the MaxMind side.
[1] https://gitweb.torproject.org/onionoo.git/tree/INSTALL [2] https://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.zip [3] https://www.maxmind.com/download/geoip/database/asnum/GeoIPASNum2.zip
-- Ivan Markin