URI record

In the Domain Name System, a Uniform Resource Identifier (URI) record (RFC 7553) is a means for publishing mappings from hostnames to URIs.

Record format

The URI record is expressed in a master file in the following format:

_service._proto.name. TTL class URI priority weight target.

where:

  • service: the symbolic name of the desired service.
  • proto: the transport protocol of the desired service; this is usually either TCP or UDP.
  • name: the domain name for which this record is valid, ending in a dot.
  • TTL: standard DNS time to live field.
  • class: standard DNS class field (this is always IN).
  • priority: the priority of the target host, lower value means more preferred.
  • weight: A relative weight for records with the same priority, higher value means more preferred.
  • target: This field holds the URI of the target, enclosed in double-quote characters ('"'), where the URI is as specified in RFC 3986

An example DNS URI resource record

 
_ftp._tcp.example.com.   3600 IN URI 10 1 "ftp://ftp1.example.com/public"

See also

References
  • RFC 7553 - The Uniform Resource Identifier (URI) DNS Resource Record
  • RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax
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