The ISSN Portal

Navigate the ocean of periodicals with the ISSN: subscribe to the ISSN Portal!

Each ISSN assigned to a serial publication is registered in an international database: the ISSN Register. This database, which is accessible through the ISSN Portal , is considered as the world catalogue of serials. More than one million ISSN numbers have so far been assigned. It is the most comprehensive and authoritative source for the identification of serial publications world-wide.

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How to subscribe?

The ISSN Portal is accessible, based on an annual licence agreement (January to December), through two subscription modes: 

  • authentication with a login and a password
  • IP authentication