.ARPA Domain

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:
Changes to the .arpa zone must be coordinated manually with us.
The IANA functions coordinate the Internet’s globally unique identifiers, and are provided by Public Technical Identifiers, an affiliate of ICANN.