ISBN Hyphenator
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Guide
How ISBN Hyphenation Works
An ISBN is structured into five distinct segments separated by hyphens according to official agency range data.
- EAN Prefix: 978 or 979 Bookland GS1 code.
- Registration Group: Identifies country, language, or territory.
- Registrant: Specific publisher code assigned by national agencies.
- Publication: Specific book title and edition.
- Check Digit: Mathematical checksum validating the ISBN.