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WHOIS

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

Query
203.143.15.169
IANA
whois.iana.org
Referred
whois.apnic.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.apnic.net

inetnum:      203.0.0.0 - 203.255.255.255
organisation: APNIC
status:       ALLOCATED

remarks:      203.0.113.0/24 reserved for TEST-NET-3 [RFC5737].
remarks:      Complete registration details for 203.0.113.0/24 are
remarks:      found iniana-ipv4-special-registry.

whois:        whois.apnic.net

changed:      1993-05
source:       IANA

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

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '203.143.0.0 - 203.143.63.255'

% Abuse contact for '203.143.0.0 - 203.143.63.255' is 'abuse@lankacom.net'

inetnum:        203.143.0.0 - 203.143.63.255
netname:        LANKACOMM-LK
descr:          Lanka Comunication Services (Pvt) Ltd
descr:          65C Dharmapala Mawatha, Colombo 07
descr:          Sri Lanka
country:        LK
org:            ORG-LCSL1-AP
admin-c:        LN43-AP
tech-c:         LN43-AP
abuse-c:        AL1516-AP
status:         ALLOCATED PORTABLE
remarks:        Aggregated block of /18
remarks:        ***This object can only modify by APNIC hostmaster
remarks:        If you wish to modify this object details please
remarks:        send email to hostmaster@apnic.net with your organisation
remarks:        account in the subject line.***
mnt-by:         APNIC-HM
mnt-lower:      MAINT-LK-LCSNOC
mnt-irt:        IRT-LANKACOM-LK
last-modified:  2020-07-07T04:57:32Z
source:         APNIC

irt:            IRT-LANKACOM-LK
address:        65C, Dharmapala Mawatha,
address:        Colombo 07,
address:        Sri Lanka
e-mail:         abuse@lankacom.net
abuse-mailbox:  abuse@lankacom.net
admin-c:        LN43-AP
tech-c:         LN43-AP
auth:           # Filtered
remarks:        abuse@lankacom.net was validated on 2026-03-12
mnt-by:         MAINT-LK-LCSNOC
last-modified:  2026-03-12T03:40:15Z
source:         APNIC

organisation:   ORG-LCSL1-AP
org-name:       Lanka Communication Services (Pvt) Ltd.
org-type:       LIR
country:        LK
address:        65C, Dharmapala Mawatha
phone:          +94-11-2437545
fax-no:         +94-11-2437547
e-mail:         int@lankacom.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:44Z
source:         APNIC

role:           ABUSE LANKACOMLK
country:        ZZ
address:        65C, Dharmapala Mawatha,
address:        Colombo 07,
address:        Sri Lanka
phone:          +000000000
e-mail:         abuse@lankacom.net
admin-c:        LN43-AP
tech-c:         LN43-AP
nic-hdl:        AL1516-AP
remarks:        Generated from irt object IRT-LANKACOM-LK
remarks:        abuse@lankacom.net was validated on 2026-03-12
abuse-mailbox:  abuse@lankacom.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-12T03:40:51Z
source:         APNIC

person:         Lanka Com Network Operating Center
nic-hdl:        LN43-AP
e-mail:         int@lankacom.net
address:        65C, Dharmapala Mawatha,
address:        Colombo 07,
address:        Sri Lanka
phone:          +94-11-2437545
fax-no:         +94-11-2437547
country:        LK
mnt-by:         MAINT-LK-LCSNOC
last-modified:  2008-09-04T07:29:20Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

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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