WorldIP - free geolocation database, service and tools

WorldIP differs from similar databases in about 30% of the used IP address space.
This is because they mostly use whois-data, without regard to real use of networks.
An example: the network of Kodak 192.232.64.0 - 192.232.127.255.
Other databases show the USA for the entire network, but in reality it consists of the following subnets:

192.232.64.0 - 192.232.65.255 - XX
192.232.66.0 - 192.232.66.255 - DE Stuttgart
192.232.67.0 - 192.232.67.255 - SG Singapore
192.232.68.0 - 192.232.68.255 - XX
192.232.69.0 - 192.232.69.255 - SG Singapore
192.232.70.0 - 192.232.70.255 - US Los Angeles
192.232.71.0 - 192.232.71.255 - US New York
192.232.72.0 - 192.232.77.255 - XX
192.232.78.0 - 192.232.78.255 - BE Brussels
192.232.79.0 - 192.232.79.255 - DE Stuttgart
192.232.80.0 - 192.232.80.255 - BE Brussels
192.232.81.0 - 192.232.94.255 - XX 
192.232.95.0 - 192.232.95.255 - US Rochester,NY
192.232.96.0 - 192.232.96.255 - CA Toronto
192.232.97.0 - 192.232.97.255 - CN Shanghai
192.232.98.0 - 192.232.98.255 - CA Toronto
192.232.99.0 - 192.232.101.255 - XX
192.232.102.0 - 192.232.102.255 - DE Stuttgart
192.232.103.0 - 192.232.116.255 - XX
192.232.117.0 - 192.232.127.255 - US Rochester,NY

As of mid-February; XX - means non-existing networks.

More information about the difference between the real geolocation data from the data of the other databases can be read here