" ; echo " $Addr
" ; $Command = '/usr/bin/geoiplookup "'.$Addr.'" | grep "City Edition"'; $ShellOut = shell_exec($Command); echo trim($ShellOut); ?>
This product includes GeoLite2 data created by MaxMind, available from https://www.maxmind.com.

Subnet Cheat Sheet
Reserved IP Addresses (Wikipedia)