ISBN registration group
ISBN group 978-612 — Peru
ISBNs beginning 978-612 are issued for Peru. The group identifier has 3 digits.
Registrant (publisher) ranges
| Registrant range | Registrant digits | Publication digits | Titles per registrant | Registrants in range |
|---|---|---|---|---|
| 00–29 | 2 | 4 | 10,000 | 30 |
| 300–399 | 3 | 3 | 1,000 | 100 |
| 4000–4499 | 4 | 2 | 100 | 500 |
| 45000–49999 | 5 | 1 | 10 | 5,000 |
| 5000–5299 | 4 | 2 | 100 | 300 |
| 5300000–9899999 | — | — | — | Not yet assigned |
| 99000–99999 | 5 | 1 | 10 | 1,000 |
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 978-612-. 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 4 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).