Registrant
The owner. Behind WHOIS privacy on most TLDs, this shows the privacy service. Without privacy, full name + address.
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Look up any domain.
Registration date, expiry, registrar, nameservers, and registrant details (where public). Free, no signup, no rate-limit prompts.
What WHOIS is
The public address book of the internet.
Every domain ever registered has a WHOIS record. Here's what's actually in one — and what's not.
Registrar
The company you bought the domain from — GigaGlobe, GoDaddy, Namecheap, etc. The registrar holds the technical relationship with the registry.
Dates
Registration date (first ever registered), updated date (last change to any record), and expiration date (when it falls out of registration).
Nameservers
Where DNS lookups for this domain are answered. Changing nameservers is how you move DNS hosting without moving the registration.
Status codes
EPP status codes like clientTransferProhibited tell you if a domain is locked, in redemption, or otherwise restricted.
What's NOT in WHOIS
Web hosting, email provider, DNS records, traffic data — those are separate systems. WHOIS only describes the registration.