WHOIS
Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
### 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: 150.0.0.0 - 150.255.255.255 organisation: Administered by APNIC status: LEGACY 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 '150.0.0.0 - 150.255.255.255' % Abuse contact for '150.0.0.0 - 150.255.255.255' is 'helpdesk@apnic.net' inetnum: 150.0.0.0 - 150.255.255.255 netname: ERX-NETBLOCK descr: Early registration addresses country: AU admin-c: HM20-AP tech-c: NO4-AP abuse-c: AA1452-AP status: ALLOCATED PORTABLE remarks: ------------------------------------------------------ remarks: Important: remarks: remarks: This range was initially allocated by InterNIC prior to the remarks: formation of Regional Internet Registries (RIRs). The early remarks: registration transfer project (ERX) transferred these blocks remarks: to be administered by each RIR based on the region in which remarks: the majority of resource holders resided. remarks: remarks: This early registration block has been transferred to APNIC's remarks: administration. However, not all of the resources under this remarks: block have been transferred to APNIC. remarks: remarks: For information on the Early Registration Transfer (ERX) remarks: project, see: http://www.apnic.net/db/erx remarks: remarks: ------------------------------------------------------ mnt-by: APNIC-HM mnt-lower: APNIC-HM mnt-irt: IRT-APNIC-AP last-modified: 2026-09-23T22:33:02Z source: APNIC irt: IRT-APNIC-AP address: Brisbane, Australia e-mail: helpdesk@apnic.net abuse-mailbox: helpdesk@apnic.net admin-c: HM20-AP tech-c: NO4-AP remarks: APNIC is a Regional Internet Registry. remarks: We do not operate the referring network and remarks: are unable to investigate complaints of network abuse. remarks: For information about IRT, see www.apnic.net/irt remarks: helpdesk@apnic.net was validated on 2020-02-03 auth: # Filtered mnt-by: APNIC-HM last-modified: 2025-11-18T00:26:21Z source: APNIC role: ABUSE APNICAP country: ZZ address: Brisbane, Australia phone: +000000000 e-mail: helpdesk@apnic.net admin-c: HM20-AP tech-c: NO4-AP nic-hdl: AA1452-AP remarks: Generated from irt object IRT-APNIC-AP remarks: helpdesk@apnic.net was validated on 2020-02-03 abuse-mailbox: helpdesk@apnic.net mnt-by: APNIC-ABUSE last-modified: 2025-11-28T01:00:58Z source: APNIC role: APNIC Hostmaster address: PO Box 3646 address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: helpdesk@apnic.net admin-c: AMS11-AP tech-c: AH256-AP nic-hdl: HM20-AP remarks: Administrator for APNIC notify: hostmaster@apnic.net mnt-by: MAINT-APNIC-AP last-modified: 2026-08-26T00:40:00Z source: APNIC person: APNIC Network Operations address: PO Box 3646 address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: netops@apnic.net nic-hdl: NO4-AP remarks: Administrator for APNIC Network Operations notify: helpdesk@apnic.net mnt-by: MAINT-APNIC-AP last-modified: 2026-08-26T00:40:01Z source: APNIC % This query was served by the APNIC Whois Service version 1.88.48 (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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