There are two licenses, one for the C library software, and one for the database. SOFTWARE LICENSE (C library) The GeoIP C Library is licensed under the LGPL. For details see the COPYING file. OPEN DATA LICENSE (GeoLite Country and GeoLite City databases) Copyright (c) 2008 MaxMind, Inc. All Rights Reserved. All advertising materials and documentation mentioning features or use of this database must display the following acknowledgment: "This product includes GeoLite data created by MaxMind, available from http://maxmind.com/" Redistribution and use with or without modification, are permitted provided that the following conditions are met: 1. Redistributions must retain the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 2. All advertising materials and documentation mentioning features or use of this database must display the following acknowledgement: "This product includes GeoLite data created by MaxMind, available from http://maxmind.com/" 3. "MaxMind" may not be used to endorse or promote products derived from this database without specific prior written permission. THIS DATABASE IS PROVIDED BY MAXMIND, INC ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MAXMIND BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DATABASE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.