Perl interface to GeoIP library

 Geo::IP is a Perl external module which provides an interface to
 GeoIP library.
 .
 GeoIP is a C library that enables the user to find the country that any
 IP address or hostname originates from. It uses a file based database
 that simply contains IP blocks as keys, and countries as values.
 This database is managed by the GeoIP library package.