These data are generated from the RangeMessage.xml file provided by the ISBN Agency. You can retrieve this yourself at <https://www.isbn-international.org/range_file_generation>. This file is included as part of the distribution and should be installed at ~lib/Business/ISBN/Data/RangeMessage.xml.
If you want to use a different RangeMessage.xml file, you can set the "ISBN_RANGE_MESSAGE" environment variable to the alternate location before you load "Business::ISBN". This way, you can use the latest (or even earlier) data without having to install something new or wait for an update to this module.
If the default RangeMessage.xml or your alternate one is not available, the module falls back to data included in Data.pm. However, that data is likely to be older data. If it does not find that file, it looks for RangeMessage.xml in the current directory.
Yakov Shafranovich updated the data in October 2008.
Daniel Jakubik updated the data in July 2012.
You may redistribute this under the same terms as Perl itself.