License
The GeoLite databases are distributed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. The attribution requirement may be met by including the following in all advertising and documentation mentioning features of or use of this database:

This product includes GeoLite data created by MaxMind, available from
  <a href="http://www.maxmind.com">http://www.maxmind.com</a>.