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 List of DNS record types References - The Uniform Resource Identifier (URI) DNS Resource Record - Uniform Resource Identifier (URI): Generic Syntax DNS record types