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WHOIS

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

Query
203.144.139.244
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 '203.144.128.0 - 203.144.159.255'

% Abuse contact for '203.144.128.0 - 203.144.159.255' is 'abuse@trueinternet.co.th'

inetnum:        203.144.128.0 - 203.144.159.255
netname:        TRUEINTERNET-TH
descr:          True Internet Corporation Co. Ltd.
descr:          1 Fortune Town,17th Floor
descr:          Ratchadapisek Road,
descr:          Din-Daeng
country:        TH
org:            ORG-TICC1-AP
admin-c:        TIA6-AP
tech-c:         TIA6-AP
abuse-c:        AT961-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AP-TRUEINTERNET
mnt-routes:     MAINT-AP-TRUEINTERNET
mnt-irt:        IRT-TRUEINTERNET-TH
last-modified:  2020-07-22T03:34:11Z
source:         APNIC

irt:            IRT-TRUEINTERNET-TH
address:        14th,27 th, floor ,Fortune Town
address:        1 Ratchadaphisek Road, Din Daeng
address:        Bangkok 10400
e-mail:         abuse@trueinternet.co.th
abuse-mailbox:  abuse@trueinternet.co.th
admin-c:        TIA6-AP
tech-c:         TIA6-AP
auth:           # Filtered
remarks:        abuse@trueinternet.co.th was validated on 2025-09-24
mnt-by:         MAINT-AP-TRUEINTERNET
last-modified:  2026-03-24T08:29:50Z
source:         APNIC

organisation:   ORG-TICC1-AP
org-name:       TRUE INTERNET CORPORATION CO. LTD.
org-type:       LIR
country:        TH
address:        No. 18, True Tower, Ratchadapisek Road
address:        Huai Khwang Subdistrict
phone:          +66-(0)-2783-0400
e-mail:         ipadmin@trueinternet.co.th
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:42Z
source:         APNIC

role:           ABUSE TRUEINTERNETTH
country:        ZZ
address:        14th,27 th, floor ,Fortune Town
address:        1 Ratchadaphisek Road, Din Daeng
address:        Bangkok 10400
phone:          +000000000
e-mail:         abuse@trueinternet.co.th
admin-c:        TIA6-AP
tech-c:         TIA6-AP
nic-hdl:        AT961-AP
remarks:        Generated from irt object IRT-TRUEINTERNET-TH
remarks:        abuse@trueinternet.co.th was validated on 2025-09-24
abuse-mailbox:  abuse@trueinternet.co.th
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-24T02:56:30Z
source:         APNIC

role:           TRUE IP ADMINISTRATION
address:        1 Fortune Town, 14th, 27th Floor,
address:        Ratchadapisek Road, Din Daeng
address:        Din Daeng, Bangkok 10400.
country:        TH
phone:          +662 6200400
fax-no:         +662 6421557
e-mail:         ipadmin@trueinternet.co.th
remarks:        abuse@trueinternet.co.th
admin-c:        AC1013-AP
admin-c:        WP1-AP
tech-c:         PY184-AP
nic-hdl:        TIA6-AP
notify:         ipadmin@trueinternet.co.th
mnt-by:         MAINT-AP-TRUEINTERNET
last-modified:  2021-08-31T02:52:30Z
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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