ISBN registration group
ISBN group 978-9907 — Ecuador
ISBNs beginning 978-9907 are issued for Ecuador. The group identifier has 4 digits.
Registrant (publisher) ranges
| Registrant range | Registrant digits | Publication digits | Titles per registrant | Registrants in range |
|---|---|---|---|---|
| 0–0 | 1 | 4 | 10,000 | 1 |
| 1000000–4999999 | — | — | — | Not yet assigned |
| 50–64 | 2 | 3 | 1,000 | 15 |
| 6500000–7999999 | — | — | — | Not yet assigned |
| 800–874 | 3 | 2 | 100 | 75 |
| 8750000–9499999 | — | — | — | Not yet assigned |
| 9500–9999 | 4 | 1 | 10 | 500 |
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 978-9907-. 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 1 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).