DIAG-03 / DIAGNOSTICS
WHOIS Lookup
Look up registrar and registration details for any domain.
About the WHOIS Lookup
WHOIS records reveal a domain's registrar, registration and expiry dates, and status. It's the fastest way to see who a domain is registered with and when it needs renewing. This tool queries WHOIS and shows both parsed fields and the raw registry response.
What this tool checks
It starts at IANA, follows the referral to the correct registry and registrar WHOIS servers, and returns the registration details along with the raw response for anything the parser doesn't structure.
Why registrars differ
WHOIS output isn't standardized, so different registrars format their responses differently and some redact contact details for privacy. The raw response ensures you see everything that was returned, even when parsing is incomplete.
Frequently asked questions
What information does WHOIS show?
WHOIS typically shows the registrar, creation and expiry dates, domain status codes, and nameservers. Contact details are often redacted for privacy under GDPR and registrar privacy services.
Why is some WHOIS data hidden?
Privacy regulations and registrar privacy services mask personal contact details to protect owners from spam and abuse. Registration and expiry dates usually remain visible.
How do I find when a domain expires?
The expiry date appears in the WHOIS response, often labeled Registry Expiry Date or Expiration Date. This checker surfaces it in the parsed fields when the registrar provides it.