Bowker is the only agency in the United States that can issue ISBNs.
Buying an ISBN directly from Bowker at ISBN.org is the only way that you will be the owner of that ISBN.
International Standard Book Numbers, also known as ISBNs, are required to publish and distribute a book through booksellers.
ISBNs are used to identify books across the world, and nearly all booksellers require books to have a unique ISBN
Ownership of an ISBN number is not transferable, so all other companies that are selling the numbers are the registered owner of the ISBN number.
Learn more about ISBN and how to get your own without losing your rights as a publisher in our Video Resource on ISBN.