Classify ip address (private) using RUM

Hi,

Adding the .js script to pages I can see my locals ip address (the ip addres used by the customer that is connected to the application), so...If I see the IP address. How can I classify it? for example:

172.16.2.x --> South

172.16.3.x --> North

172.16.4.x --> Central

172.16.5.x --> Caribbean

172.16.6.x --> West

The idea is to identify from where are the connections cuming.

Thank you.

Michael.