Download GeoLite2-Country.mmdb from MaxMind and place it at:
panel/modules/GeoLiteCountry/storage/GeoLite2-Country.mmdb
The database is not bundled. The module uses a local read-only MMDB reader and needs neither an external API nor the maxminddb PHP extension.
Only literal IPv4/IPv6 hosts are queried. Domains are not resolved. A detected ISO country code is prepended as [NL] c0dx:Original name; unknown countries add no placeholder.
Replace the MMDB file manually when updating it. IP geolocation is approximate and does not prove the physical server or proxy exit location.