geoipgen is a country to IPs generator written in ruby.

[urbanadventurer]

geoipgen is a country to IPs generator written in ruby.
It can generate IPs for entire countries, or the world in a random order.

Usage: ./geoipgen [OPTION]... [COUNTRYCODE]...
IPv4 network tool for generating geotargeted IP lists of countries.
Features: Random or sorted order, unique or repeating IPs, skips
broadcast addresses, uses MaxMind GeoLite Country database.

Target:
 COUNTRYCODE	One or more country codes, delimited by spaces
 		Use 'all' to target all country codes. Use -l to see a list.
 -n NUM		Exits after NUM IPs

Unique or repeating:
 -u, --unique	Return each IP in the countries once only (default)
 --repeat	IPs can repeat with random order

Order:
 -s, --sorted	Order is sorted, ascending
 --random	Order is random (default)
 --less-random	Order is random seeming, returns each IP only once
 		Provides significant performance gain when used with 'all'
 		countrycodes
Other:
 -h, --help	This message
 -l, --list-countries  List countries and their country codes
 -c DIRECTORY	Location of GeoIPCountryWhois.csv database
 		Default locations: ./, /home/dc/.geoipgen/, /usr/local/share/
 -V, --version	Print version information. This version is 0.4

Examples: 
geoipgen nz	All IPs in New Zealand in a random order
geoipgen nz au	All IPs in New Zealand and Australia in a random order

geoipgen --repeat -n 100 cn hk mn tw mo jp kr kp
		100 random IPv4 addresses in Far East Asia.

geoipgen all	Random, allocated IPs. More efficient than entirely random IPs. Uses 'less-random' for low memory overhead.

Submit bug reports to Andrew Horton, (urbanadventurer) at hxxp://code.google.com/p/geoipgen

Homepage: hxxp://code.google.com/p/geoipgen

[Snayler]

Originally Posted by urbanadventurer

geoipgen is a country to IPs generator written in ruby.
It can generate IPs for entire countries, or the world in a random order.

Homepage: hxxp://code.google.com/p/geoipgen

You can test output later with:
GeoIP
It even finds the city.