Man pages matching name geoip.conf in section 5:

GeoIP.conf.5.en	debian 10 / geoipupdate
geoip.conf.5.en	debian 10 / libpam-geoip
GeoIP.conf.5.en	debian 11 / geoipupdate
geoip.conf.5.en	debian 11 / libpam-geoip
GeoIP.conf.5.en	debian 12 / geoipupdate
geoip.conf.5.en	debian 12 / libpam-geoip