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WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.

Query
181.1.153.65
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:      181.0.0.0 - 181.255.255.255
organisation: LACNIC
status:       ALLOCATED

whois:        whois.lacnic.net

changed:      2010-06
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.
%  2026-03-26 14:54:43 (-03 -03:00)

inetnum:     181.1.152.0/22
status:      allocated
aut-num:     AS27895
owner:       Núcleo S.A.
ownerid:     PY-NUSA-LACNIC
responsible: Omar Monges
address:     Maximo Lira, 522, 
address:     8605 - Asuncion - CE
country:     PY
phone:       +595 21 2199000
owner-c:     SES52
tech-c:      SES52
abuse-c:     SES52
inetrev:     181.1.152.0/22
nserver:     NS1.PERSONAL.NET.PY
nsstat:      20260326 AA
nslastaa:    20260326
nserver:     NS2.PERSONAL.NET.PY
nsstat:      20260326 AA
nslastaa:    20260326
nserver:     NS3.PERSONAL.NET.PY
nsstat:      20260326 AA
nslastaa:    20260326
nserver:     NS4.PERSONAL.NET.PY
nsstat:      20260326 AA
nslastaa:    20260326
created:     20101203
changed:     20231207

nic-hdl:     SES52
person:      Sergio Da Silva
e-mail:      sergio.dasilva@personal.com.py
address:     Maximo Lira, 522, 
address:     0000 - Asuncion - Ce
country:     PY
phone:       +595 21 2199225
created:     20140805
changed:     20211228

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

Frequently Asked Questions

What is WHOIS?

WHOIS is a protocol that queries databases to find the registered owner of a domain name or IP address. It reveals the registrar, registration dates, nameservers, and contact information associated with a domain or IP block.

Is WHOIS data always accurate?

Not always. Many domain registrars offer WHOIS privacy protection that replaces the registrant's personal details with proxy information. IP WHOIS data from Regional Internet Registries (RIRs) is generally more reliable than domain WHOIS data.

Can I use WHOIS to find who owns an IP address?

Yes. Enter any IP address into the WHOIS tool to find the organization that owns the IP block, the Regional Internet Registry (ARIN, RIPE, APNIC, etc.) that allocated it, and the network range it belongs to.

What is the difference between domain WHOIS and IP WHOIS?

Domain WHOIS shows registration details like the registrar, creation date, expiry date, and nameservers. IP WHOIS shows the network allocation, the organization that owns the IP block, and the abuse contact for reporting issues.

Why does WHOIS show privacy protection instead of real details?

Domain registrars offer WHOIS privacy services to protect registrants from spam, identity theft, and unwanted contact. GDPR regulations in Europe also require redaction of personal data from WHOIS records.

How often is WHOIS data updated?

WHOIS data is updated by the registrar or registry whenever changes are made to a domain or IP registration. Our tool queries the authoritative WHOIS server in real-time, with results cached for 7 days to reduce server load.

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