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WHOIS

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

Query
192.235.51.254
IANA
whois.iana.org
Referred
whois.arin.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.arin.net

inetnum:      192.0.0.0 - 192.255.255.255
organisation: Administered by ARIN
status:       LEGACY

remarks:      192.0.2.0/24  reserved for TEST-NET-1 [RFC5737].
remarks:      192.88.99.0/24 reserved for 6to4 Relay Anycast
remarks:      [RFC7526].192.88.99.2/32 reserved for 6a44 Relay Anycast
remarks:      [RFC6751](possibly collocated with 6to4 Relay at
remarks:      192.88.99.1/32 - see [RFC7526]).192.168.0.0/16 reserved
remarks:      for Private-Use Networks [RFC1918]. Complete
remarks:      registration details are found
remarks:      iniana-ipv4-special-registry.
remarks:      192.0.0.0/24 reserved for IANA IPv4 Special Purpose
remarks:      Address Registry [RFC5736]. Complete registration
remarks:      details for 192.0.0.0/24 are found
remarks:      iniana-ipv4-special-registry.

whois:        whois.arin.net

changed:      1993-05
source:       IANA

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

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


#
# Query terms are ambiguous.  The query is assumed to be:
#     "n 192.235.51.254"
#
# Use "?" to get help.
#

NetRange:       192.235.48.0 - 192.235.63.255
CIDR:           192.235.48.0/20
NetName:        COLUMBUS-BARBADOS
NetHandle:      NET-192-235-48-0-1
Parent:         NET192 (NET-192-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Columbus Telecommunications (Barbados) Limited (CTBL)
RegDate:        2013-02-26
Updated:        2025-02-10
Ref:            https://rdap.arin.net/registry/ip/192.235.48.0


OrgName:        Columbus Telecommunications (Barbados) Limited
OrgId:          CTBL
Address:        6th Floor, CGI Towers, Warrens
City:           St. Michael
StateProv:      
PostalCode:     BB12001
Country:        BB
RegDate:        2015-03-18
Updated:        2024-11-04
Ref:            https://rdap.arin.net/registry/entity/CTBL


OrgTechHandle: ROCKN5-ARIN
OrgTechName:   Rock, Nikolas  
OrgTechPhone:  +1-246-234-4547 
OrgTechEmail:  nikolas.rock@cwc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ROCKN5-ARIN

OrgAbuseHandle: CWCCS-ARIN
OrgAbuseName:   CWC-CSIRT
OrgAbusePhone:  +4291401 
OrgAbuseEmail:  cwc-csirt@cwc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CWCCS-ARIN

OrgTechHandle: JOK14-ARIN
OrgTechName:   King, Junior  Orlando
OrgTechPhone:  +1-246-230-3031 
OrgTechEmail:  junior.king@cwc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JOK14-ARIN

OrgNOCHandle: CWCRN-ARIN
OrgNOCName:   CWC RNOC
OrgNOCPhone:  +1-868-224-2001 
OrgNOCEmail:  rnoc@cwc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CWCRN-ARIN

OrgTechHandle: JACKS1398-ARIN
OrgTechName:   Jackson, Altie 
OrgTechPhone:  +1-876-312-8390 
OrgTechEmail:  altie.jackson@cwc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JACKS1398-ARIN

OrgTechHandle: ANDRE608-ARIN
OrgTechName:   Andrew Millington
OrgTechPhone:  +1-246-230-4820 
OrgTechEmail:  andrew.millington@cwc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ANDRE608-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

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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