Whois Domain Lookup (RDAP)
Check domain registration: creation and expiry dates, registrar, status codes, and nameservers.
About This Tool & Technical Logic
Whois data answers the ownership questions: who registered a domain, when, through which registrar, when it expires, and its current status codes (clientTransferProhibited, pendingDelete, and so on).
This tool queries RDAP — the modern JSON successor to the classic port-43 whois protocol — through the IANA bootstrap service, which routes each query to the authoritative registry automatically.
GET rdap.org/domain/{domain} — the RDAP redirector resolves the authoritative registry in one hop.
How to Use — Step by Step
- 1
Enter a domain
Bare domain only. Some country-code TLDs (.de, .uk) restrict registration data by privacy law and return thin results.
- 2
Check the key dates
Expiration plus a ~30-day renewal grace and a redemption period defines when an expiring domain actually becomes registerable.
- 3
Read status codes
"pendingDelete" means it drops soon; "ok" means no locks. Status codes often explain transfer failures better than registrars' support desks.
Frequently Asked Questions
GDPR and similar laws redact personal data in whois since 2018. Company registrations and registrar/dates remain visible.