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Free WHOIS Domain Lookup
Look up who a domain is registered with, when it was created, when it expires and which name servers it uses — pulled from the registry's official RDAP service.
WHOIS and RDAP
WHOIS is the long-standing way to query domain registration records. Its replacement is RDAP, the Registration Data Access Protocol, which returns the same kind of data as structured JSON over HTTPS. ICANN-accredited registries and registrars for generic TLDs support RDAP, and ICANN retired the requirement to run legacy WHOIS for those domains in 2025.
This tool finds the right RDAP server for the domain's TLD from the IANA bootstrap file, queries it directly, and falls back to rdap.org. For subdomains it looks up the registered parent domain.
Reading the record
- Registrar — the company the domain is registered through, where transfers and renewals happen.
- Registrant — usually redacted for privacy under GDPR and registrar policy; that's normal.
- Created / expires — the domain's age and renewal date. Under 30 days to expiry is flagged.
- Name servers — where DNS is hosted; they often reveal the CDN or DNS provider.
- Status — EPP codes such as
client transfer prohibited(a normal lock) orredemption period(expired, recoverable for a short time).
When it's useful
Checking a competitor's domain age and DNS provider, confirming your own renewal date before it lapses, verifying a domain before buying it, or finding the registrar after a migration. Domain age alone isn't a ranking factor, but an expired domain takes your site — and every AI citation pointing at it — offline. For the site itself, run the SEO checker.
FAQ
Questions
Why is the owner's name hidden?+
Most registrars redact personal registrant data by default for privacy. You can usually contact the owner through a form or relay address provided by the registrar.
Why can't some domains be looked up?+
A few country-code TLDs don't offer RDAP yet, and the lookup also fails for unregistered domains. In those cases use the registry's own WHOIS service.
Does domain age affect SEO?+
Google has said domain age itself isn't a ranking factor. Older domains often rank well because they've had time to earn links and content, not because of the date.
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