.arpa domain information
The ".arpa" stands for "Address and Routing Parameter Area," which is an infrastructure top-level domain. Initially utilized by ARPANET, it is now designated for internet technical parameters and address management. This domain is not available to the general market but is specifically used for network infrastructure technical purposes.
Introduction
The ".arpa" domain stands for "Address and Routing Parameter Area," which is an infrastructure top-level domain in the internet.
Initially, "arpa" was an acronym for the Advanced Research Projects Agency, the funding organization in the United States that developed the ARPANET, the precursor to the internet. The .arpa domain was originally established for temporary purposes to systematically name ARPANET computers. However, after the domain had been approved for infrastructure use, it became difficult to remove it in practice, so the name was redefined as Address and Routing Parameter Area.
One of the most common uses of the .arpa domain is for reverse DNS lookups, which are performed when an IP address needs to be converted into a hostname. For instance, reverse lookups for IPv4 addresses are conducted within the .in-addr.arpa subdomain, while reverse lookups for IPv6 addresses take place within the .ip6.arpa subdomain.
Websites with .arpa domain names are generally not directly accessible and are used only for specific technical support within the network infrastructure.
Target market
For network infrastructure, such as reverse DNS lookups (mapping IP addresses to domain names)
Restrictions
Not open for registration
Intended use
The technical infrastructure used to support Internet Protocol (IP) networks was initially a temporary top-level domain to facilitate the transition from ARPANET to the DNS.
Registration rules
The registration of .arpa domain names is strictly limited, and general users cannot directly register and use them. Only organizations responsible for managing Internet infrastructure are eligible to use them. Currently, new subdomains are rarely added when carrying out network infrastructure engineering tasks.
Renewal policy
Due to its unique nature, it generally does not involve renewal policies on the public market.
Transfer policy
The standard domain transfer policies do not apply to .arpa domains; .arpa domains are not permitted to be transferred.
Dispute resolution policy
The .arpa domain is not of a commercial or personal nature, hence the general dispute resolution mechanisms do not apply to .arpa domain names.
Typical users
1. ENUM (Electronic Number Mapping) is used to map telephone numbers to Internet services - e164.arpa
2. Used for IPv6 reverse DNS resolution, mapping IPv6 addresses back to the relevant domain names - ip6.arpa
3. Used for IPv4 reverse DNS resolution, mapping IPv4 addresses back to the relevant domain names - in-addr.arpa
4. Abbreviation for Internet Registry Information Service, used to provide registry data query services - iris.arpa
5. Used for URI resolution services - uri.arpa
6. Used for resolution services of Uniform Resource Names (URN) - urn.arpa
7. Provides a special domain for residential networks, typically used for local network services - home.arpa
8. Used to support certain activities of the Internet Engineering Task Force (IETF) - ietf.arpa
9. Used to assist in implementing IPv4 connectivity in IPv6 networks - ipv4only.arpa
10. Used for hosting the authoritative DNS servers for the .arpa domain - ns.arpa
Registrar prices
No registrar price rows yet