urn:ietf:params:

urn:ietf:params

[1]

名前空間説明状態出典
urn:ietf:params:cpim-headersCPIM IETF 標準化過程RFC 3862, [IANAREG]
urn:ietf:params:ecmlIETF 標準化過程[RFC to be], [IANAREG]
urn:ietf:params:gss
urn:ietf:params:imdn
urn:ietf:params:netconf
urn:ietf:params:oauth
urn:ietf:params:rdp-hdrext
urn:ietf:params:sieve
urn:ietf:params:xmlXML 語彙IETF 標準化過程RFC 3688, [IANAREG]

[2] 仕様書: