WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
201.143.181.110
IANA
whois.iana.org
Referred
whois.lacnic.net
WHOIS servers can rate limit. Results are cached for performance.
### IANA response (whois.iana.org)

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

refer:        whois.lacnic.net

inetnum:      201.0.0.0 - 201.255.255.255
organisation: LACNIC
status:       ALLOCATED

whois:        whois.lacnic.net

changed:      2003-04
source:       IANA

### Registry response (whois.lacnic.net)

% IP Client: 2001:41d0:305:2100:0:0:0:5cfe
 
% Joint Whois - whois.lacnic.net
%  This server accepts single ASN, IPv4 or IPv6 queries

% LACNIC resource: whois.lacnic.net


% Copyright LACNIC lacnic.net
%  The data below is provided for information purposes
%  and to assist persons in obtaining information about or
%  related to AS and IP numbers registrations
%  By submitting a whois query, you agree to use this data
%  only for lawful purposes.
%  2026-02-02 18:53:28 (-03 -03:00)

inetnum:     201.143.181.0/24
status:      reassigned
aut-num:     N/A
owner:       Transmision de Datos TELNOR
ownerid:     MX-TDTE-LACNIC
responsible: Maria del Carmen Sotelo Salazar
address:     Calle Pio Pico, 1525, Zona Centro
address:     22000 - Tijuana - BC
country:     MX
phone:       +52 664 6332215
owner-c:     TEN6
tech-c:      TEN6
abuse-c:     TEN6
inetrev:     201.143.181.0/24
nserver:     NSA-BCN-ARBOL-1.UNINET.NET.MX
nsstat:      20260129 AA
nslastaa:    20260129
nserver:     NSA-BCN-PIOPICO-1.UNINET.NET.MX
nsstat:      20260129 AA
nslastaa:    20260129
nserver:     NSGDL1.UNINET.NET.MX
nsstat:      20260129 AA
nslastaa:    20260129
nserver:     NSGDL2.UNINET.NET.MX
nsstat:      20260129 AA
nslastaa:    20260129
created:     20130425
changed:     20130425
inetnum-up:  201.143.128.0/18

nic-hdl:     TEN6
person:      Telefonos del Noroeste
e-mail:      jugon@telnor.com
address:     Calle Pio Pico, 1525, Zona Centro
address:     22000 - Tijuana - BC
country:     MX
phone:       +52  6646332229
created:     20060922
changed:     20181130

% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.