Country to IP range list

["Kevin Barzdaitis" <kevin () bidz com>]

Hello, all!
 
I have a situation here where specific services shall be offered ONLY to
specific countries. I think of blocking all IP addresses (on the firewall)
for specific servers and allowing only IP ranges by Country. I was wondering
if there exists publicly available list of "Country to IP ranges". I was
only able to find "IP to Country" mappings, but i need to check every
address specifically.
 
Thanks!