Developer Tools tool
WHOIS Lookup
Run a public WHOIS / RDAP lookup on any domain to see registrar, registration dates, expiration, status flags, and nameservers.
Free WHOIS / RDAP lookup. Find a domain's registrar, registration date, expiry, status flags, and nameservers via public RDAP registries.
Why people use this tool
WHOIS Lookup runs a public RDAP query (the modern, JSON-based replacement for classic WHOIS) and returns the registrar, registration date, expiry date, status flags, and nameservers for any domain — with redacted contact data shown where the registry permits.
- Confirm a domain's expiry date before relying on it for production traffic.
- See which registrar a domain is parked at and whether transfer locks are set.
- Check status flags like clientHold or pendingDelete during incident response.
How to use it
- 1Enter the domain (no protocol, no path).
- 2Read the registrar, dates, and status flags.
- 3Expand the contacts panel to see any non-redacted registrant or admin info.
Best practices
- Set a calendar reminder a month before a domain's expiry date.
- Enable transfer-lock and registrar-lock on important domains.
- Keep the registrant email valid — registries use it for forced verification.
- Use RDAP rather than legacy WHOIS where possible — it returns structured JSON.
Common mistakes to avoid
- Do not rely on WHOIS for ownership when contacts are redacted under GDPR.
- Do not infer "abandoned" from missing details; many TLDs redact by default.
- Do not skip the status flags — they often reveal pending issues.
- Do not register critical domains for only one year — set 2–10 years and auto-renew.
FAQ
Helpful answersWhat is RDAP?
RDAP (Registration Data Access Protocol) is the modern, structured, HTTPS-and-JSON replacement for legacy WHOIS, mandated by ICANN for new gTLDs.
Why are contacts redacted?
Most registries now mask registrant data to comply with GDPR. Use the registrar's contact form to reach the owner.
Is the domain stored?
No. It is sent to a public RDAP registry only and not retained.