HOME > FAQ

Can't find what you're looking for? Contact Us

FAQ for existing publishers

This applies only to publishers who have bought an allocation of at least ten ISBNs. If you have a single ISBN, you can either apply for another single, or for a larger allocation. Each ISBN publisher prefix allows for a fixed number of ISBNs. When these are exhausted publishers must apply for a new ISBN prefix. It is quite common for a publisher to be identified by more than one ISBN prefix.