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.


% IANA WHOIS server
% for more information on IANA, visit http://www.iana.org
% This query returned 1 object

domain:       20.in-addr.arpa

organisation: Administered by ARIN

nserver:      arin.authdns.ripe.net.
nserver:      r.arin.net.
nserver:      u.arin.net.
nserver:      x.arin.net.
nserver:      y.arin.net.
nserver:      z.arin.net.
ds-rdata:     5518 5 1 8db263ffc06d2f94856a5db995c450fc735530be
ds-rdata:     5518 5 2 2d4417d6c0ea005b65aa504d07bbfe4d0391f0b3d9b1ca61554c6377ac2e655d

whois:        whois.arin.net

changed:      1994-10
changed:      2017-02-23
source:       IANA