ISBN registration group
ISBN group 978-4 — Japan
ISBNs beginning 978-4 are issued for Japan. The group identifier has 1 digit.
Registrant (publisher) ranges
| Registrant range | Registrant digits | Publication digits | Titles per registrant | Registrants in range |
|---|---|---|---|---|
| 00–19 | 2 | 6 | 1,000,000 | 20 |
| 200–699 | 3 | 5 | 100,000 | 500 |
| 7000–8499 | 4 | 4 | 10,000 | 1,500 |
| 85000–89999 | 5 | 3 | 1,000 | 5,000 |
| 900000–949999 | 6 | 2 | 100 | 50,000 |
| 9500000–9999999 | 7 | 1 | 10 | 500,000 |
Shorter registrant numbers are issued to larger publishers (more publication digits = more titles).
Reading an ISBN from this group
Every ISBN in this group starts 978-4-. The next digits are the registrant; look up which range the following seven digits fall into to know how long the registrant element is. For example, if the registrant has 2 digits, the publication element has 6 digits, then comes the check digit.
Check, convert or hyphenate any ISBN with the ISBN converter, and make a print-ready barcode with the ISBN barcode generator.
Sources & data
- International ISBN Agency RangeMessage (Fri, 2 Oct 2026 16:08:21 UTC).