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title="Go to ISSN." href="https://www.issn.org" class="home">ISSN</a><a title="Go to Understanding the ISSN." href="https://www.issn.org/?page_id=1248">Understanding the ISSN</a>The ISSN International Portal </div> <article> <header> <h1>The ISSN International Portal</h1> </header> <div class="entry"> <div class="article-extra"> <p class="article-imprimer"><a onClick="window.print()" value="Imprimer cette page" href="#" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Print</span></a></p> <p class="article-telecharger"><a class="tooltip2" href="https://www.issn.org/wp-content/plugins/post2pdf-converter/post2pdf-converter-pdf-maker.php?id=702"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Download</span></a></p> <p id="partager" class="article-partager"><a href="#" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Share</span></a></p> <p class="article-envoyer"><a href="mailto:?body=https://www.issn.org/understanding-the-issn/the-issn-international-register/" class="tooltip2"> <span><img class="callout" src="https://www.issn.org/wp-content/themes/themeissn/img/fleche-tootip.png" />Send to a friend</span></a></p> <div id="reseau"> <ul> <li><a href="http://www.facebook.com/share.php?u=https://www.issn.org/understanding-the-issn/the-issn-international-register/">facebook</a></li> <li><a href="http://twitter.com/home/?status=https://www.issn.org/understanding-the-issn/the-issn-international-register/">twitter</a></li> </ul> </div> </div> <p>The <a href="https://portal.issn.org">ISSN International Portal</a> is published by the ISSN International Centre. It lists all ISSNs assigned to serial publications. It is the most complete reference source in the world for the identification of serial publications.</p> <ul> <li>The <a href="https://portal.issn.org">ISSN International Portal</a> in figures</li> <li>Exhaustive data</li> <li>Access the ISSN International Portal</li> </ul> <h2>The ISSN International Portal in figures</h2> <p>The ISSN Network has assigned more than <strong>2.5</strong><b> million ISSN</b>.</p> <p>The database is constantly updated by the ISSN Network. It increases by approximately 50,000 to 70,000 ISSNs per year, reflecting an equivalent number of records and identified publications.</p> <p>Nearly <b>130,000 corrections and modifications </b>are made every year.</p> <p>The Internet online version is updated continuously.</p> <p>For complete information about the contents and expansion of the ISSN International Portal, view the ISSN statistics (in English):</p> <ul> <li><a href="https://www.issn.org/wp-content/uploads/2023/02/Total-number-of-records.pdf">Total number of records</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-for-countries-with-NC_v3.pdf">Number of records from countries with an ISSN National Centre</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-for-countries-under-IC-1.pdf">Number of records for countries under IC</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-per-type.pdf">Number of records per type</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-per-medium.pdf">Number of records per medium</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-per-status.pdf">Number of records per status</a></li> <li><a href="https://www.issn.org/wp-content/uploads/2021/09/Records-per-languages-most-represented.pdf">Number of records per languages most represented</a></li> </ul> <h2>Exhaustive data</h2> <p>Each bibliographical record in the ISSN International Portal contains:</p> <ul> <li>the publication’s unique reference elements: <ul> <li>ISSN,</li> <li>key title, and</li> <li>abbreviated key title,</li> </ul> </li> <li>additional elements used to identify the publication concerned: <ul> <li>frequency,</li> <li>language,</li> <li>other forms of the title,</li> <li>place of publishing,</li> <li>publisher,</li> <li>medium, etc.</li> </ul> </li> <li>where appropriate, the links associating the title concerned with other titles also identified by an ISSN: <ul> <li>previous title(s),</li> <li>issues in other languages,</li> <li>issues in other media, etc.</li> </ul> </li> </ul> <h2>Access the <a href="https://portal.issn.org">ISSN International Portal</a></h2> <p>The <a href="https://portal.issn.org">ISSN International Portal</a> is available online and under subscription via the <a href="https://www.issn.org/produit/issn-portal/" target="_blank" rel="noopener noreferrer">ISSN Portal</a>.</p> <p>Other access modes are possible:</p> <ul> <li><a href="https://www.issn.org/services/subscribe-to-the-register/subscription-options/" target="_blank" rel="noopener noreferrer">Z39.50</a>,</li> <li><a href="https://www.issn.org/services/subscribe-to-the-register/subscription-options/" target="_blank" rel="noopener noreferrer">OAI-PMH protocol</a>,</li> <li><a href="https://www.issn.org/services/subscribe-to-the-register/subscription-options/" target="_blank" rel="noopener noreferrer">raw data file</a>.</li> </ul> <p>ISSN records are available in the 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