ISSN Regina Reynolds, Library of Congress (U.S. ISSN Center)
There are 80 ISSN centers worldwide with about 150 people associated with the assigning of ISSNs.
The ISSN International Center is located in Paris. It assigns the prefixes to ISSN centers and holds a master copy of descriptive metadata — the “Key Title” plus other metadata elements in MARC format — for every assigned ISSN. It also provides documentation, a manual (about 80-100 pages in length) and support for new centers coming on board.