When is a new ISSN assigned?

A new ISSN is assigned when the title of a publication changes. The same applies to mergers (when at least two publications are combined) and splits (when a title is split into at least two new publications). A new ISSN is also required if the format of a publication changes – for example from printed to online.

ISSN are not changed in the following situations: Change of publisher and/or place of publication and/or frequency of publication (e.g. weekly to monthly).

A separate ISSN is also assigned to

• supplements,
• numbered inserts,
• other editions (e.g. speech output),
• serial special editions of a periodical.