The ISP_MATCH database schema is
Copyright (C) 1999-2004 Sam Watkins and Mark McCormack.

You can redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later version.

On Debian systems, the complete text of the GNU General Public License
can be found in the /usr/share/common-licenses directory.