IN-ADDR.ARPA Zone Transfer Complete

Posted: Wed, 16 February 2011

Today ARIN and ICANN are jointly working on the transition of the technical management function for the IN-ADDR.ARPA zone from ARIN to ICANN. ARIN carried out the DNS zone maintenance function for IN-ADDR.ARPA since 1997 and worked closely with ICANN throughout the transition period.

Immediately upon transfer to ICANN, the IN-ADDR.ARPA zone will also be signed using DNS Security Extensions (DNSSEC), providing end-users with the ability to validate answers to reverse DNS queries. The IN-ADDR.ARPA zone is also in the process of being moved from twelve root servers to dedicated nameservers operated by the five Regional Internet Registries (RIRs) and one operated by ICANN.

For more details on the history of this transition please see


Communications and Member Services
American Registry for Internet Numbers (ARIN)