IETF XML Registry

Last Updated

2025-10-24

Note

[RFC3688] defines an IANA maintained registry of XML documents used within IETF protocols.
These documents are divided into classes: XML Namespaces, Document Type Declarations, Schemas, and RDF Schemas.
Individual documents are then registered within each class. The class and document names are combined to form a name
which is then used within the 'urn:ietf:params:xml' portion of the IANA maintained URN space for protocol parameters.

This registry is intended for:

(1) identifiers whose use is described in an IETF specification, and

(2) identifiers that are allocated in IETF-controlled URI space, such as "urn:ietf:..." and/or "http://...ietf.org/..."

The registration template should cite the specification.

The list of classes is provided below.

Available Formats

XML
HTML
Plain text

Registries Included Below

• publicid
• ns
• schema
• rdfschema

publicid

Registration Procedure(s)

Specification Required

Expert(s)

Tim Bray, Martin Thomson

Reference

[RFC3688]

Note

[RFC3688] defines an IANA maintained registry of XML documents used within IETF protocols.
These documents are divided into classes: XML Namespaces, Document Type Declarations, Schemas, and RDF Schemas.
The following are the entries for the 'publicid' class of documents.

This registry is intended for:

(1) identifiers whose use is described in an IETF specification, and

(2) identifiers that are allocated in IETF-controlled URI space, such as "urn:ietf:..." and/or "http://...ietf.org/..."

The registration template should cite the specification.
    

Available Formats

CSV

ns

Registration Procedure(s)

Specification Required

Expert(s)

Tim Bray, Martin Thomson

Reference

[RFC3688]

Available Formats

CSV

schema

Registration Procedure(s)

Specification Required

Expert(s)

Tim Bray and Martin Thomson for non-IODEF schemas, Kathleen Moriarty for IODEF schemas

Reference

[RFC3688][RFC6685]

Note

[RFC3688] defines an IANA maintained registry of XML documents used within IETF protocols.
These documents are divided into classes: XML Namespaces, Document Type Declarations, Schemas, and RDF Schemas.
The following are the entries for the 'schema' class of documents.

This registry is intended for:

(1) identifiers whose use is described in an IETF specification, and

(2) identifiers that are allocated in IETF-controlled URI space, such as "urn:ietf:..." and/or "http://...ietf.org/..."

The registration template should cite the specification.

Per [RFC6685], IODEF schemas require an additional review by the IESG-designated IODEF expert.
    

Available Formats

CSV

rdfschema

Registration Procedure(s)

Specification Required

Expert(s)

Tim Bray, Martin Thomson

Note

[RFC3688] defines an IANA maintained registry of XML documents used within IETF protocols.
These documents are divided into classes: XML Namespaces, Document Type Declarations, Schemas, and RDF Schemas.
The following are the entries for the 'rdfschema' class of documents.

This registry is intended for:

(1) identifiers whose use is described in an IETF specification, and

(2) identifiers that are allocated in IETF-controlled URI space, such as "urn:ietf:..." and/or "http://...ietf.org/..."

The registration template should cite the specification.
    

Contact Information