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🔎 Registrar · Expiry · Name Servers · DNSSEC · RDAP · Status

WHOIS Lookup

Free WHOIS lookup. Search domain registration details. Registrar, registration and expiry dates, name servers, DNSSEC status, and domain status codes. Powered by RDAP.

✓ Registrar details✓ Expiry countdown✓ Name servers✓ DNSSEC status✓ No signup
Enter a domain to look up its WHOIS registration details
What this tool does

Free WHOIS lookup: search domain registration details, expiry dates, and name servers via RDAP

How WHOIS lookup works and what each field means

This WHOIS lookup tool queries the RDAP (Registration Data Access Protocol) federated network. The modern, structured replacement for the old plain-text WHOIS protocol. RDAP returns consistent JSON data with registration dates, expiry dates, registrar information, name servers, DNSSEC status, and domain status codes. The expiry field includes a live countdown showing days remaining, making it easy to spot domains that are close to expiring.

WHOIS lookups are used by domain owners to verify their registration details, by security researchers to investigate domain ownership, by businesses to check competitor domain registrations, and by developers to verify DNS configuration before deploying. The tool covers all generic TLDs (.com, .net, .org, .io, etc.) and many country-code TLDs that support RDAP.

FAQ

Frequently asked questions about WHOIS lookup and domain registration data

What is WHOIS?
WHOIS is a query and response protocol used to look up registration information for internet resources. Domain names, IP addresses, and autonomous system numbers. For domain names, a WHOIS lookup returns the registrar, registration and expiry dates, name servers, and registrant contact information (though most individual registrants now have their data redacted under GDPR). WHOIS data is publicly accessible by design, as it was originally created to identify the operators of internet resources for coordination and abuse reporting purposes.
What is RDAP and how is it different from WHOIS?
RDAP (Registration Data Access Protocol) is the modern replacement for WHOIS, standardised by ICANN and IETF. Unlike the old plain-text WHOIS protocol, RDAP returns structured JSON data with consistent field names, supports internationalised domain names properly, includes access controls for sensitive data, and uses HTTPS. This tool uses the rdap.org federated RDAP service, which automatically routes queries to the correct authoritative RDAP server for each TLD.
Why is registrant information hidden?
Since GDPR came into effect in 2018, most domain registrars and registries redact personal contact information for individuals from public WHOIS/RDAP records. Organisation and business registrations still show company information in many cases. The redacted information (email, phone, address) is replaced with 'Redacted for privacy' or routes to a privacy proxy service. Legitimate abuse and legal requests can still obtain this information through the registrar's official channels.
What does 'clientTransferProhibited' status mean?
Domain status codes communicate the current state of a domain and what operations are allowed. 'clientTransferProhibited' means the registrar has locked the domain against transfers to another registrar. This is the most common status and actually a good security feature that prevents unauthorised transfers. 'clientDeleteProhibited' prevents deletion. 'clientUpdateProhibited' prevents changes to registration data. 'serverHold' means the registry has suspended the domain.
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