We are using the region code from Geolite (Maxmind) that we found here: http://geolite.maxmind.com/download/geoip/misc/region_codes.csv
Does anyone know how they select the region they cover? I'm asking because for Latvia (LV) we cannot find any logical reason for those regions. There also are duplicated entries and entries which are exactly the same but with an s at the end.
If anyone already used them and know the reason, it would be very helpfull. Thanks!
Those are FIPS 10-4 region codes. Looking at Latvia, it appears that the distinction between "Municipality" and "District" got lost in MaxMind's data.