GeoIP.dat file
From AMule Project FAQ
Contents
File
Name: GeoIP.dat
Location: ~/.aMule/
Description
Binary format file containing a database of the physical location of IP addresses. It is used by the GeoIP extension of php. For more information on that, see the PHP Manual - Geo IP Location.
GeoIP.dat is published by MaxMind. To get the latest version of the file, or to download the APIs for using it, go to the MaxMind GeoLite Databases page.
Format
Binary, and possibly proprietary.
Notes
The location from which to download GeoIP.dat would appear to be hard-coded into Preferences.cpp:
$ grep -n "GeoIP.dat" Preferences.cpp 1254: s_MiscList.push_back( new Cfg_Str( wxT("/eMule/GeoLiteCountryUpdateUrl"), s_GeoIPUpdateUrl, wxT("http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz") ) );