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<?xml-stylesheet type="text/xsl" href="urn-namespaces.xsl"?>
<?xml-model href="urn-namespaces.rng" schematypens="http://relaxng.org/ns/structure/1.0" ?>
<registry xmlns="http://www.iana.org/assignments" id="urn-namespaces">
  <title>Uniform Resource Names (URN) Namespaces</title>
  <category>Uniform Resource Names (URN)</category>
  <updated>2026-03-18</updated>
  
  <note>This is the Official IANA Registry of URN Namespaces.
  </note>
  <registry id="urn-namespaces-1">
    <title>Formal URN Namespaces</title>
    <xref type="rfc" data="rfc8141"/>
    <registration_rule>Expert Review, per Section 6 of <xref type="rfc" data="rfc8141"/>. 
Fast-track procedure for standards organizations described in Section 6.3.</registration_rule>
    <expert>Peter Saint-Andre (team leader), Dale Worley, Juha Hakala, Stephanie Palek, Lars Svensson, Jyrki Ilva</expert>
    <record>
      <name>3gpp</name>
      <xref type="rfc" data="rfc5279"/>
    </record>
    <record date="2018-06-19">
      <name>3gpp2</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/3gpp2">3gpp2-template</xref></template>
      <xref type="rfc" data="rfc8464"/>
    </record>
    <record date="2017-01-20">
      <name>adid</name>
      <xref type="rfc" data="rfc8107"/>
    </record>
    <record date="2014-11-14">
      <name>alert</name>
      <xref type="rfc" data="rfc7462"/>
    </record>
    <record date="2016-12-06">
      <name>bbf</name>
      <xref type="rfc" data="rfc8057"/>
    </record>
    <record date="2016-12-06">
      <name>broadband-forum-org</name>
      <xref type="rfc" data="rfc8057"/>
    </record>
    <record date="2025-02-04">
      <name>c2pa</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/c2pa">c2pa-template</xref></template>
      <xref type="uri" data="https://c2pa.org/">C2PA</xref>
    </record>
    <record>
      <name>cablelabs</name>
      <xref type="rfc" data="rfc6289"/>
    </record>
    <record date="2015-10-19">
      <name>ccsds</name>
      <xref type="rfc" data="rfc7738"/>
    </record>
    <record date="2022-03-28">
      <name>cdx</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/cdx">cdx-template</xref></template>
      <xref type="uri" data="https://owasp.org/">The OWASP Foundation Inc.</xref>
    </record>
    <record>
      <name>cgi</name>
      <xref type="rfc" data="rfc5138"/>
    </record>    
    <record>
      <name>clei</name>
      <xref type="rfc" data="rfc4152"/>
    </record>
    <record date="2025-04-14">
      <name>csa</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/csa">csa-template</xref></template>
      <xref type="uri" data="https://csa-iot.org/">Connectivity Standards Alliance</xref>
    </record>
    <record date="2023-08-04">
      <name>cta</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/cta">cta-template</xref></template>
      <xref type="uri" data="https://cta.tech/">Consumer Technology Association</xref>
    </record>
    <record date="2021-05-18">
      <name>ddi</name>
      <xref type="rfc" data="rfc9517"/>
    </record>
    <record date="2021-03-24">
      <name>dev</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/dev">dev-template</xref></template>
      <xref type="rfc" data="rfc9039"/>
    </record>
    <record>
      <name>dgiwg</name>
      <xref type="rfc" data="rfc6288"/>
    </record>
    <record date="2023-03-14">
      <name>doi</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/doi">doi-template</xref></template>
      <xref type="uri" data="https://doi.org">DOI Foundation</xref>
    </record>
    <record date="2016-12-06">
      <name>dslforum-org</name>
      <xref type="rfc" data="rfc8057"/>
    </record>
    <record>
      <name>dvb</name>
      <xref type="rfc" data="rfc5328"/>
      <xref type="rfc" data="rfc7354"/>
    </record>
    <record>
      <name>ebu</name>
      <xref type="rfc" data="rfc5174"/>
    </record>
    <record date="2021-12-31" updated="2022-03-21">
      <name>eic</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/eic">eic-template</xref></template>
      <xref type="uri" data="https://www.entsoe.eu/">European Network of Transmission System Operators for Electricity (ENTSO-E)</xref>
    </record>  
    <record date="2014-06-02" updated="2016-09-09">
      <name>eidr</name>
      <xref type="rfc" data="rfc7972"/>
    </record> 
    <record>
      <name>epc</name>
      <xref type="rfc" data="rfc5134"/>
    </record>
    <record>
      <name>epcglobal</name>
      <xref type="rfc" data="rfc5134"/>
    </record>
    <record date="2018-11-26">
      <name>etsi</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/etsi">etsi-template</xref></template>
      <xref type="rfc" data="rfc8515"/>
    </record>  
    <record date="2014-02-18">
      <name>eurosystem</name>
      <xref type="rfc" data="rfc7207"/>
    </record>
    <record>
      <name>example</name>
      <xref type="rfc" data="rfc6963"/>
    </record>    
    <record>
      <name>fdc</name>
      <xref type="rfc" data="rfc4198"/>
    </record>    
    <record>
      <name>fipa</name>
      <xref type="rfc" data="rfc3616"/>
    </record>
     <record date="2026-03-11">
      <name>gdr</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/gdr">gdr-template</xref></template>
      <xref type="uri" data="https://registry.godaddy/">GoDaddy Registry</xref>
    </record>       
    <record date="2021-12-01">
      <name>gdst</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/gdst">gdst-template</xref></template>
      <xref type="uri" data="https://ift.org">Institute of Food Technologists</xref>
    </record>    
    <record>
      <name>geant</name>
      <xref type="rfc" data="rfc4926"/>
    </record>
    <record date="2016-03-18">
      <name>globus</name>
      <xref type="rfc" data="rfc7853"/>
    </record>
    <record date="2014-03-06">
      <name>gsma</name>
      <xref type="rfc" data="rfc7254"/>
    </record>
    <record date="2023-05-02">
      <name>gvat</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/gvat">gvat-template</xref></template>
      <xref type="uri" data="https://www.bundeskanzleramt.gv.at/">Bundeskanzleramt der Republik Österreich</xref>
    </record>
    <record date="2015-03-11">
      <name>hbbtv</name>
      <xref type="rfc" data="rfc7528"/>
    </record>
    <record date="2016-12-06">
      <name>ieee</name>
      <xref type="rfc" data="rfc8069"/>
    </record>
    <record>
      <name>ietf</name>
      <xref type="rfc" data="rfc2648"/>
    </record>    
    <record>
      <name>iptc</name>
      <xref type="rfc" data="rfc3937"/>
    </record>
    <record>
      <name>isan</name>
      <xref type="rfc" data="rfc4246"/>
    </record>  
    <record>
      <name>isbn</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/isbn">isbn-template</xref></template>
      <xref type="uri" data="https://www.isbn-international.org">International ISBN Agency</xref>
    </record>
    <record>
      <name>iso</name>
      <xref type="rfc" data="rfc5141"/>
    </record>
    <record date="2025-10-16">
      <name>isni</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/isni">isni-template</xref></template>
      <xref type="uri" data="https://isni.org/">ISNI International Agency</xref>
    </record>
    <record>
      <name>issn</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/issn">issn-template</xref></template>
      <xref type="uri" data="http://www.issn.org">ISSN International Centre</xref>
    </record>
    <record date="2018-07-26">
      <name>itu</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/itu">itu-template</xref></template>
      <xref type="uri" data="https://www.itu.int/">International Telecommunications Union (ITU)</xref>
    </record>
    <record>
      <name>ivis</name>
      <xref type="rfc" data="rfc4617"/>
    </record>
    <record date="2023-09-29">
      <name>knx</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/knx">knx-template</xref></template>
      <xref type="uri" data="https://knx.org">KNX Association cvba</xref>
    </record>
    <record date="2021-12-22">
      <name>lei</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/lei">lei-template</xref></template>
      <xref type="uri" data="https://www.gleif.org">Global Legal Entity Identifier Foundation (GLEIF)</xref>
    </record>
    <record date="2022-11-18">
      <name>lex</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/lex">lex-template</xref></template>
      <xref type="rfc" data="rfc9676"/>
    </record> 
    <record>
      <name>liberty</name>
      <xref type="rfc" data="rfc3622"/>
    </record>   
    <record>
      <name>mace</name>
      <xref type="rfc" data="rfc3613"/>
    </record>
    <record date="2016-02-08">
      <name>mef</name>
      <xref type="rfc" data="rfc7818"/>
    </record>
    <record date="2022-11-17">
      <name>meta</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/meta">meta-template</xref></template>
      <xref type="person" data="Juha_Hakala"/>
    </record>   
    <record>
      <name>mpeg</name>
      <xref type="rfc" data="rfc3614"/>
    </record>
    <record date="2017-11-27">
      <name>mrn</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/mrn">mrn-template</xref></template>
      <xref type="uri" data="http://www.iala-aism.org">International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA)</xref>
    </record>
    <record date="2023-08-04">
      <name>nan</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/nan">nan-template</xref></template>
      <xref type="uri" data="https://kansallisarkisto.fi/">The National Archives of Finland</xref>
    </record>
    <record date="2015-01-08">
      <name>nato</name>
      <xref type="rfc" data="rfc7467"/>
    </record>    
    <record>
      <name>nbn</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/nbn">nbn-template</xref></template>
      <xref type="rfc" data="rfc8458"/>
    </record>   
    <record>
      <name>nena</name>
      <xref type="rfc" data="rfc6061"/>
    </record>   
    <record>
      <name>newsml</name>
      <xref type="rfc" data="rfc3085"/>
    </record>    
    <record>
      <name>nfc</name>
      <xref type="rfc" data="rfc4729"/>
    </record>  
    <record date="2025-08-12">
      <name>nfi</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/nfi">nfi-template</xref></template>
      <xref type="uri" data="https://neuro-foundation.io/">Neuro-Foundation</xref>
    </record>
    <record>
      <name>nzl</name>
      <xref type="rfc" data="rfc4350"/>
    </record>   
    <record>
      <name>oasis</name>
      <xref type="rfc" data="rfc3121"/>
    </record>
    <record>
      <name>ogc</name>
      <xref type="rfc" data="rfc5165"/>
    </record>    
    <record>
      <name>ogf</name>
      <xref type="rfc" data="rfc6453"/>
    </record>
    <record>
      <name>oid</name>
      <xref type="rfc" data="rfc3061"/>
    </record>    
    <record>
      <name>oipf</name>
      <xref type="rfc" data="rfc6893"/>
    </record>    
    <record>
      <name>oma</name>
      <xref type="rfc" data="rfc4358"/>
    </record>
    <record date="2022-11-17">
      <name>onem2m</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/onem2m">onem2m-template</xref></template>
      <xref type="uri" data="https://www.onem2m.org/">oneM2M Partnership Project</xref>
    </record> 
    <record date="2018-06-25">
      <name>onf</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/onf">onf-template</xref></template>
      <xref type="uri" data="https://www.opennetworking.org/">Open Networking Foundation</xref>
    </record> 
    <record>
      <name>pin</name>
      <xref type="rfc" data="rfc3043"/>
    </record>    
    <record date="2024-05-29">
      <name>pno</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/pno">pno-template</xref></template>
      <xref type="uri" data="https://www.profibus.com/">PROFIBUS Nutzerorganisation e.V.</xref>
    </record>
    <record>
      <name>publicid</name>
      <xref type="rfc" data="rfc3151"/>
    </record>
    <record date="2022-11-18">
      <name>pwid</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/pwid">pwid-template</xref></template>
      <xref type="person" data="Eld_Zierau"/>
    </record> 
    <record date="2021-03-01">
      <name>reso</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/reso">reso-template</xref></template>
      <xref type="uri" data="https://www.reso.org">Real Estate Standards Organization (RESO)</xref>
    </record> 
    <record>
      <name>s1000d</name>
      <xref type="rfc" data="rfc4688"/>
    </record>
    <record date="2026-03-18">
      <name>said</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/said">said-template</xref></template>
      <xref type="person" data="Wenjing_Chu">trustoverip@lfdecentralizedtrust.org</xref>
    </record> 
    <record>
      <name>schac</name>
      <xref type="rfc" data="rfc6338"/>
    </record>
    <record>
      <name>service</name>
      <xref type="rfc" data="rfc5031"/>
    </record>
    <record>
      <name>smpte</name>
      <xref type="rfc" data="rfc5119"/>
    </record>
    <record date="2025-04-14">
      <name>stalwart</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/stalwart">stalwart-template</xref></template>
      <xref type="uri" data="https://stalw.art/">Stalwart Labs LLC</xref>
    </record>
    <record>
      <name>swift</name>
      <xref type="rfc" data="rfc3615"/>
    </record>
    <record date="2024-12-09">
      <name>thread</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/thread">thread-template</xref></template>
      <xref type="uri" data="https://www.threadgroup.org/">Thread Group, Inc.</xref>
    </record>
    <record>
      <name>tva</name>
      <xref type="rfc" data="rfc4195"/>
    </record>
    <record>
      <name>uci</name>
      <xref type="rfc" data="rfc4179"/>
    </record>
    <record>
      <name>ucode</name>
      <xref type="rfc" data="rfc6588"/>
      <xref type="rfc-errata" data="3188"/>
      <xref type="rfc-errata" data="3189"/>
    </record>
    <record date="2023-08-04">
      <name>uic</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/uic">uic-template</xref></template>
      <xref type="uri" data="https://uic.org/">Union International de Chemin de Fer</xref>
    </record>
    <record updated="2023-11-17">
      <name>uuid</name>
      <xref type="rfc" data="rfc9562"/>
    </record>
     <record>
      <name>web3d</name>
      <xref type="rfc" data="rfc3541"/>
    </record>
    <record date="2025-06-05">
      <name>wmo</name>
      <template><xref type="uri" data="https://www.iana.org/assignments/urn-formal/wmo">wmo-template</xref></template>
      <xref type="uri" data="https://wmo.int/">World Meteorological Organization</xref>
    </record>
    <record>
      <name>xmlorg</name>
      <xref type="rfc" data="rfc3120"/>
    </record>
    <record>
      <name>xmpp</name>
      <xref type="rfc" data="rfc4854"/>
    </record>        
  </registry>
  
  <registry id="urn-namespaces-2">
    <title>Informal URN Namespaces</title>
    <xref type="rfc" data="rfc8141"/>
    <registration_rule>Expert Review, per Section 6 of <xref type="rfc" data="rfc8141"/>.</registration_rule>
    <expert>Peter Saint-Andre (team leader), Dale Worley, Juha Hakala, Stephanie Palek</expert>
    <record>
      <name>urn-1</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-1">urn-1</xref>
      <contact><xref type="person" data="Michael_Mealling"/></contact>
    </record>
    <record>
      <name>urn-2</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-2">urn-2</xref>
      <contact><xref type="person" data="Robert_M._Akscyn"/></contact>
    </record>
    <record>
      <name>urn-3</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-3">urn-3</xref>
      <contact><xref type="person" data="Andrea_Goethals"/></contact>
    </record>
    <record>
      <name>urn-4</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-4">urn-4</xref>
      <contact><xref type="person" data="Kevin_P._Yancey"/></contact>
    </record>
    <record>
      <name>urn-5</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-5">urn-5</xref>
      <contact><xref type="person" data="B._Fallenstein"/></contact>
    </record>
    <record>
      <name>urn-6</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-6">urn-6</xref>
      <contact><xref type="person" data="Evan_Prodromou"/></contact>
    </record>
    <record updated="2015-03-25">
      <name>urn-7</name>
      <contact><xref type="rfc" data="rfc6050"/></contact>
    </record>
    <record date="2025-07-02">
      <name>urn-8</name>
      <xref type="uri" data="https://www.iana.org/assignments/urn-informal/urn-8">urn-8</xref>
      <contact><xref type="person" data="Juanma_Garcia"/></contact>
    </record>
  </registry>
  <people>
    <person id="Andrea_Goethals">
      <name>Andrea Goethals</name>
      <uri>mailto:nrs-ns-adm&amp;hulmail.harvard.edu</uri>
      <updated>2010-01-28</updated>
    </person>
    <person id="B._Fallenstein">
      <name>B. Fallenstein</name>
      <uri>mailto:b.fallenstein&amp;gmx.de</uri>
      <updated>2002-08-16</updated>
    </person>
    <person id="Eld_Zierau">
      <name>Eld Zierau</name>
      <uri>mailto:elzi&amp;kb.dk</uri>
      <updated>2022-11-18</updated>
    </person>
    <person id="Evan_Prodromou">
      <name>Evan Prodromou</name>
      <uri>mailto:evan&amp;wikitravel.org</uri>
      <updated>2006-04-25</updated>
    </person>
    <person id="Juanma_Garcia">
      <name>Juanma Garcia</name>
      <uri>mailto:revistaencrucijadas&amp;gmail.com</uri>
      <updated>2025-07-02</updated>
    </person>
    <person id="Juha_Hakala">
      <name>Juha Hakala</name>
      <uri>mailto:juha.hakala&amp;helsinki.fi</uri>
      <updated>2022-11-17</updated>
    </person>
    <person id="Kevin_P._Yancey">
      <name>Kevin P. Yancey</name>
      <uri>mailto:kpyancey&amp;yahoo.com</uri>
      <updated>2002-02-11</updated>
    </person>
    <person id="Michael_Mealling">
      <name>Michael Mealling</name>
      <uri>mailto:michael&amp;bailey.dscga.com</uri>
      <updated>2001-02-23</updated>
    </person>
    <person id="Robert_M._Akscyn">
      <name>Robert M. Akscyn</name>
      <uri>mailto:rma&amp;ks.com</uri>
      <updated>2001-02-23</updated>
    </person>
    <person id="Wenjing_Chu">
      <name>Wenjing Chu</name>
      <uri>mailto:trustoverip&amp;lfdecentralizedtrust.org</uri>
      <updated>2026-03-18</updated>
    </person>
  </people>
</registry>
