<reference anchor="RFC4289" target="https://www.rfc-editor.org/info/rfc4289" xml:base="https://xml2rfc.tools.ietf.org/public/rfc/bibxml/reference.RFC.4289.xml">
<front>
<title>Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures</title>
<author initials="N." surname="Freed" fullname="N. Freed"><organization/></author>
<author initials="J." surname="Klensin" fullname="J. Klensin"><organization/></author>
<date year="2005" month="December"/>
<abstract><t>This document specifies IANA registration procedures for MIME external body access types and content-transfer-encodings.  This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.</t></abstract>
</front>
<seriesInfo name="BCP" value="13"/>
<seriesInfo name="RFC" value="4289"/>
<seriesInfo name="DOI" value="10.17487/RFC4289"/>
</reference>