WHOIS is a query and response protocol that returns information about registered domain names and IP addresses. A WHOIS lookup shows the domain's registrar, registration and expiry dates, name servers, and registrant contact information (though many registrants use privacy protection to hide personal details).

How do I find out who owns a domain?

Enter the domain name in the WHOIS lookup tool above. The results show the registrant's contact information if privacy protection is not enabled, the domain registrar, registration date, and expiry date. Many domain owners use WHOIS privacy services that replace personal info with proxy contact details.

WHOIS Lookup

Look up domain registration details — registrar, creation date, expiry, name servers, and registrant info.

whois.sh

Domain Name

Querying WHOIS…

Raw WHOIS Output

What is WHOIS?

WHOIS is a protocol that queries a distributed database of registered internet resources — domain names, IP address blocks, and autonomous systems. It was standardized in the 1980s and remains one of the fundamental tools for internet administration and security research.

A WHOIS record for a domain typically contains: the registrar (the company where the domain was purchased), registration and expiry dates, updated date, name servers, and registrant contact information. Since GDPR implementation in 2018, many registrars mask personal contact information with proxy data.

What can WHOIS tell you?

Who registered a domain and when
When a domain expires (critical for security monitoring)
Which company or person registered it (if privacy is off)
What nameservers the domain points to
Whether a domain is locked against transfers

Frequently Asked Questions

WHOIS is a query protocol that returns registration information about domain names and IP addresses. It shows the registrar, registration date, expiry date, nameservers, and contact info for the domain owner. Many registrants use privacy services, so the contact info may show a proxy address rather than the actual owner's details.

Enter the domain in the WHOIS tool above. If the owner hasn't enabled privacy protection, their name, email, and contact details will appear. If they use WHOIS privacy (common since GDPR), you'll see proxy contact details from the privacy service instead.

Run a WHOIS lookup on the domain. The results include the "Registry Expiry Date" or "Expiration Date" field showing exactly when the domain registration expires. Domains that expire are dropped and become available for anyone to register.

Domain lock statuses in WHOIS (like clientTransferProhibited, clientUpdateProhibited) indicate what operations are restricted on the domain. "clientTransferProhibited" means the domain cannot be transferred to another registrar without first unlocking it — this protects against unauthorized domain hijacking.