.arpa
Sign in to saveAlso known as arpa, infrastructure top-level domain, Address and Routing Parameter Area
The domain name arpa is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet. It is used predominantly for the management of technical network infrastructure. Prominent among such functions are the subdomains in-addr.arpa and ip6.arpa, which provide namespaces for reverse DNS lookup of IPv4 and IPv6 addresses, respectively.
Key facts
- Top level domain.name
- .arpa
- Top level domain.type
- Infrastructure domain
- Top level domain.status
- Active
- Top level domain.registry
- IANA
- Top level domain.sponsor
- Internet Architecture Board
- Top level domain.intendeduse
- A temporary TLD to facilitate the transition from ARPANET to the DNS.
- Top level domain.actualuse
- Internet infrastructure such as reverse DNS lookup.
- Top level domain.restrictions
- No domain registrations possible, new subdomains rarely added
- Top level domain.structure
- Second-level domains used for various functions related to Internet infrastructure as defined by RFCs.
- Top level domain.disputepolicy
- None
- Top level domain.website
- IANA .arpa info
- Top level domain.dnssec
- Yes
via Wikipedia infobox
Wikidata facts
- Official website
- www.iana.org/arpa-dom
Show 1 more fact
- inception
- 1999-00-00
Sources (3)
via Wikidata · CC0
~8 min read
Article
8 sectionsContents
- Purpose
- Reverse IP address mapping
- Telephone number mapping
- Residential networking
- History
- Subdomains
- References
- External links
The domain name arpa is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet. It is used predominantly for the management of technical network infrastructure. Prominent among such functions are the subdomains in-addr.arpa and ip6.arpa, which provide namespaces for reverse DNS lookup of IPv4 and IPv6 addresses, respectively.
The name originally was the acronym for the Advanced Research Projects Agency (ARPA), the funding organization in the United States that developed the ARPANET, the precursor of the Internet. It was the first domain defined for the network in preparation for a hierarchical naming system for the delegation of authority, autonomy, and responsibility. It was originally intended only to serve in a temporary function for facilitating the systematic naming of the ARPANET computers. However, it became practically difficult to remove the domain after infrastructural uses had been sanctioned. As a result, the name was redefined as the backronym Address and Routing Parameter Area.