Would you like to be able to pinpoint where are IPv6 visitors coming from , just like with IPv4 ones ?

Well, I wanted and I have created an IPv6 Geolocation database.  It holds Country code for every IPv6 subnet which was available on BGP last weekend. I am going to update it every 2 weeks.

I’ve used Perl with Net::IP to convert address to an integer and I am using integers in a SQLite database to identify it.

The flow is as simple as :

• convert address to integer
• run SQLite query
  SELECT country FROM ipcountry WHERE ip <= ? ORDER BY ip DESC LIMIT 1;
  ? – is your IP in integer format.
• 2 letter country code will be returned

Yes, if you will query for IPv6 address which is in a subnet which wasn’t advertised on the date when database was updated you will end up with a country code for other closest subnet.

I am not releasing it publicly, yet. However if you are interested, contact me and we will see what can get arranged.