Provisional Standard Media Type Registry
Created
- 2012-07-20
Last Updated
- 2026-08-07
Available Formats
Provisional Standard Media Type Registry
Registration Procedure(s)
- FCFS (Organization subject to IESG Approval)
Reference
- RFC 6838: Media Type Specifications and Registration Procedures
Note
This registry, unlike some other provisional IANA registries, is only for temporary use. Entries in this registry are either finalized and moved to the main media types registry or are abandoned and deleted. Entries in this registry are suitable for use for development and test purposes only.
Available Formats
| Media Type | Organization | Reference |
|---|---|---|
| application/odm+json | CDISC | Sam Hume |
| text/asciidoc | Eclipse Foundation AISBL | Frédéric Desbiens |
| application/json-nd | ECMA | Glen Kleidon |
| application/cert-chain+cbor | IETF | draft-yasskin-http-origin-signed-responses-07 |
| application/dc+sd-jwt | IETF | draft-ietf-oauth-sd-jwt-vc-18 |
| application/ion | IETF | Jonathan Hohle |
| application/kb+cwt | IETF | draft-ietf-spice-sd-cwt-06 |
| application/pkix-keyinfo | IETF | draft-hallambaker-mesh-udf-05 |
| application/sd-cwt | IETF | draft-ietf-spice-sd-cwt-06 |
| application/signed-exchange | IETF | draft-yasskin-http-origin-signed-responses-07 |
| application/voucher+cose | IETF | draft-ietf-anima-constrained-voucher-23 |
| application/webbundle | IETF | draft-yasskin-wpack-bundled-exchanges-02 |
| application/1ob | IMS Global Learning Consortium Inc. | Rob Coyle |
| image/j2is | ITU-T and ISO/IEC JTC 1 | ISO/IEC JTC 1/SC 29/WG 1 Convenor |
| application/jcr-sql2 | Java Community Process (JCP) | Julian Reschke |
| application/jcr-xpath | Java Community Process (JCP) | Julian Reschke |
| application/mwf | MEDIS-DC | Kazuhiko Muramatsu |
| application/akn+xml | OASIS | Chet Ensign |
| application/rsl+xml | RSL Internet Collective | Eckart Walther |
| text/nfo | Seantek | Sean Leonard |
| application/clf+xml | Society of Motion Picture and Television Engineers (SMPTE) | Frederick Walls |
| application/CESR | Trust Over IP Foundation | Samuel M. Smith |
| application/netcdf | Unidata | Ethan Davis |
| application/reports+json | W3C | Douglas Creager |
| application/rif+xml | W3C | Sandro Hawke |
| application/won | IETF/W3C/other | Roy T. Fielding |
Contact Information
| Name | Contact URI | Last Updated |
|---|---|---|
| Chet Ensign | chet.ensign&oasis-open.org | 2021-04-05 |
| Douglas Creager | dcreager&google.com | 2018-06-26 |
| Eckart Walther | eckart&rslstandard.org | 2026-06-05 |
| Ethan Davis | edavis&ucar.edu | 2021-12-16 |
| Frédéric Desbiens | frederic.desbiens&eclipse-foundation.org | 2025-07-10 |
| Frederick Walls | fwalls&m.smpte.org | 2025-10-28 |
| Glen Kleidon | glenk&galkam.com.au | 2020-07-22 |
| ISO/IEC JTC 1/SC 29/WG 1 Convenor | sc29-sec&itscj.ipsj.or.jp | 2023-05-15 |
| Jonathan Hohle | jonhohle&gmail.com | 2017-06-28 |
| Julian Reschke | julian.reschke&greenbytes.de | 2025-11-24 |
| Kazuhiko Muramatsu | Kazuhiko_Muramatsu&mb1.nkc.co.jp | 2026-08-07 |
| Rob Coyle | rcoyle&1edtech.org | 2023-05-11 |
| Roy T. Fielding | fielding&gbiv.com | 2015-08-25 |
| Sam Hume | shume&cdisc.org | 2018-10-31 |
| Samuel M. Smith | sam&samuelsmith.org | 2024-02-15 |
| Sandro Hawke | sandro&w3.org | 2021-01-11 |
| Sean Leonard | dev+ietf&seantek.com | 2015-10-21 |