Kod ISSN codesdilantik areoleh assignedsebuah by a network ofrangkaian ISSN National Centres, usuallybiasanya locateddiletakkan atdi [[nationalperpustakaan library|national librarieskebangsaan]] and coordinateddan bydikordinasikan theoleh ISSN International Centre basedberasaskan indi [[Paris]]. The International Centre is an [[International organization|intergovernmental organization]] created in 1974 through an agreement between [[UNESCO]] and the French government. The International Centre maintains a database of all ISSNs assigned worldwide, the ''ISDS Register (International Serials Data System)'' otherwise known as the ''ISSN Register''. The ISSN Register contains ISSN codes and descriptions for more than one million periodicals<ref>The one million milestone was reached in 2001 according to [http://www.issn.org/en/node/330 the ISSN statistics information page]. Retrieved [[2005]]-[[07-17]].</ref> with around 50,000 new records added yearly.
