Whois Lookup

Professional Whois Lookup

Uses the RDAP protocol (modern WHOIS replacement). Some TLDs may not have full RDAP support.

Professional Whois Lookup

Features

Domain registration data via RDAP (Registration Data Access Protocol) — the modern JSON-based successor to port 43 WHOIS
Lookups go to rdap.org, which federates to the appropriate registrar/registry
Returns registrant, registrar, dates (registration / expiry), name servers, status flags
Works for most TLDs that participate in RDAP (essentially all gTLDs and many ccTLDs)
Some country-code TLDs (e.g. some EU ccTLDs) limit personal data in RDAP responses for GDPR reasons

Each lookup sends an HTTPS request to rdap.org. The domain name and your IP address are visible to that service — this is NOT a 100%-private offline tool.
Privacy-protected registrations show "Privacy Service" or "REDACTED FOR PRIVACY" instead of the registrant's name and email.
Expiry-date watching: set a calendar reminder a few weeks before a critical domain expires — registrars' grace periods vary.
Domain status codes like "clientTransferProhibited" mean the registrar is blocking moves; "pendingDelete" means the domain is in its 30-day deletion window.
For ccTLDs that don't support RDAP, the tool may return an error — fall back to your registrar's WHOIS web form.

Yes, completely free with no registration, no limits, and no hidden costs.

All processing happens in your browser. No data is ever sent to any server or third party.

Once loaded, the tool works entirely offline. All processing is done client-side with JavaScript.

Works in Chrome, Firefox, Safari, Edge, and all modern browsers on desktop and mobile.

Yes, all output is yours to use freely in any personal or commercial project without restrictions.