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URI schemes (IANA registry)

Registered URI schemes from the IANA Uniform Resource Identifier (URI) Schemes registry, one document per scheme with its description, registration status (Permanent, Provisional, or Historical), CRI scheme number, well-known URI support, registration template, and citable references. References that name individuals are omitted.

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Documents

Showing 385–408 of 435 documents

DocumentVersion

turns

The URI scheme "turns" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

tv (TV Broadcasts)

The URI scheme "tv" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "TV Broadcasts".

v1

udp

The URI scheme "udp" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

unreal

The URI scheme "unreal" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

upn

The URI scheme "upn" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

upt

The URI scheme "upt" is a Historical registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

urn (Uniform Resource Names)

The URI scheme "urn" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Uniform Resource Names".

v1

ust

The URI scheme "ust" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

ut2004

The URI scheme "ut2004" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

uuaid

The URI scheme "uuaid" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

uuid-in-package

The URI scheme "uuid-in-package" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

v-event

The URI scheme "v-event" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

vemmi (versatile multimedia interface)

The URI scheme "vemmi" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "versatile multimedia interface".

v1

ventrilo

The URI scheme "ventrilo" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

ves

The URI scheme "ves" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

videotex

The URI scheme "videotex" is a Historical registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

view-source

The URI scheme "view-source" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

vnc (Remote Framebuffer Protocol)

The URI scheme "vnc" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Remote Framebuffer Protocol".

v1

vscode

The URI scheme "vscode" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

vscode-insiders

The URI scheme "vscode-insiders" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

vsls

The URI scheme "vsls" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

w3 (w3 (see [reviewer notes]))

The URI scheme "w3" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "w3 (see [reviewer notes])".

v1

wais (Wide Area Information Servers)

The URI scheme "wais" is a Historical registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Wide Area Information Servers".

v1

wasm

The URI scheme "wasm" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.

v1

Source, review, and usage
Published on Koskamo by
Koskamo
Version
436
Documents
435 documents
Reviewed
2026-10-05
Last approved change
2026-10-05
Agent lookups
0 in the last 90 days
Reuse
IANA Uniform Resource Identifier (URI) Schemes registry (iana.org/assignments/uri-schemes); registry data reproduced verbatim with references
Review status
Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "uri-schemes".

Set up your agentRead documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request
curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"uri-schemes","dataset":"uri-schemes","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

  1. Published by Koskamo

    qb · v1

  2. Published by Koskamo

    hxxps · v1

  3. Published by Koskamo

    ztdnaid · v1

  4. Published by Koskamo

    z39.50s (Z39.50 Session) · v1

  5. Published by Koskamo

    z39.50r (Z39.50 Retrieval) · v1

  6. Published by Koskamo

    z39.50 (Z39.50 information access) · v1

  7. Published by Koskamo

    ymsgr · v1

  8. Published by Koskamo

    xri · v1

  9. Published by Koskamo

    xrcp · v1

  10. Published by Koskamo

    xmpp (Extensible Messaging and Presence Protocol) · v1