.ARPA Zone Management

The .arpa domain is the “Address and Routing Parameter Area” domain and is designated to be used exclusively for Internet-infrastructure purposes. We administer the domain in cooperation with the Internet technical community through the guidance of the Internet Architecture Board. For the management guidelines and operational requirements of the .arpa domain, see RFC 3172. The .arpa domain currently includes the following second-level domains:

Domain Usage / Reference
arpa Reserved exclusively to support operationally-critical infrastructural identifier spaces as advised by the Internet Architecture Board
RFC 3172
as112.arpa For sinking DNS traffic for reverse IP address lookups and other applications
RFC 7535
e164.arpa For mapping E.164 numbers to Internet URIs
RFC 6116
home.arpa For non-unique use in residential home networks
RFC 8375
in-addr-servers.arpa For hosting authoritative name servers for the in-addr.arpa domain
RFC 5855
in-addr.arpa For mapping IPv4 addresses to Internet domain names
RFC 1035
ip6-servers.arpa For hosting authoritative name servers for the ip6.arpa domain
RFC 5855
ip6.arpa For mapping IPv6 addresses to Internet domain names
RFC 3152
ipv4only.arpa For detecting the presence of DNS64 and for learning the IPv6 prefix used for protocol translation
RFC 7050
iris.arpa For locating Internet Registry Information Services
RFC 4698
uri.arpa For resolving Uniform Resource Identifiers according to the Dynamic Delegation Discovery System
RFC 3405 draft-hardie-dispatch-rfc3405-update
urn.arpa For resolving Uniform Resource Names according to the Dynamic Delegation Discovery System
RFC 3405

Maintain

Changes to the .arpa zone must be coordinated manually with us.