The IANA WHOIS Service is provided using the WHOIS protocol on port 43. This web gateway will query this server and return the results. Accepted query arguments are domain names, IP addresses and AS numbers. By submitting any personal data, you acknowledge and agree that the personal data submitted will be processed in accordance with our Privacy Policy, and you agree to abide by the website Terms of Service.
% IANA WHOIS server % for more information on IANA, visit http://www.iana.org % This query returned 1 object domain: 231.in-addr.arpa organisation: Multicast nserver: a.iana-servers.net. nserver: b.iana-servers.net. nserver: c.iana-servers.net. nserver: ns.icann.org. ds-rdata: 52173 13 2 56017332720c92b4153deeb20c23bf8e23613f050ad37cb0c81737bae6702dc0 changed: 1981-09 changed: 2025-03-31 source: IANA