What's My DNS
whatsmydns.net
Checks a DNS record from dozens of resolvers around the world at once
No sign-up
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lookup.icann.org
The registry's own WHOIS record for a domain, with no upsell.
ICANN's official RDAP and WHOIS front end: registrar, creation and expiry dates, nameservers and status codes, straight from the registry. Using this rather than a commercial WHOIS matters because the commercial ones frequently pair a lookup with an offer to sell you the domain, and some log your queries against it. Registrant contact details are usually redacted under GDPR, so this tells you who registered the domain far less often than people expect.
AltFTool does this too
If you would rather not leave the site, Domain Checker covers the same job here — free, no account, and it runs in your browser.
Open Domain CheckerQuestions
Works the moment the page loads. No account, no email, no trial. Registrant names and emails are redacted for most domains, and some country registries are not covered.
Yes. ICANN Lookup sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Registrant names and emails are redacted for most domains, and some country registries are not covered.
Alternatives
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whatsmydns.net
Checks a DNS record from dozens of resolvers around the world at once
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