This data is current as of the date in the module version. At that time, the publisher codes 9990000-9999999 or 999000-999999 had not been fixed, although they had been proposed. I do not include them in the data. Some regions, including India (93), Gabon (99902), and Congo (99951) have country codes but no publisher codes. They still have entries even though you won't be able to validate any ISBNs assigned in those regions.

Business::ISBN uses this "data pack" to do its work. You can update Business::ISBN::Data independently of the main module as the various ISBN organizations assign new publisher codes. The ISBN agency lists these data at http://www.isbn-international.org/converter/ranges.htm .