Look up registration details, nameservers, expiry dates, and registrar information for any domain.
WHOIS (pronounced "who is") is a public protocol for querying databases that store the registration information of domain names. When someone registers a domain, certain data — such as the registrar, registration date, and nameservers — is recorded and made publicly accessible.
Our WHOIS lookup tool queries RDAP (Registration Data Access Protocol), the modern replacement for traditional WHOIS. Depending on the domain's registrar and privacy settings, you can typically find: the domain's registrar, creation and expiry dates, last update date, nameservers, domain status codes, and sometimes registrant information.
Domain investors use WHOIS to check when domains expire (for potential acquisition), who the registrar is, and how old a domain is — since domain age is a factor in both SEO and valuation. Webmasters use it to verify DNS configuration and ensure their registration hasn't lapsed.
Since GDPR and similar privacy regulations took effect, most registrars redact personal contact information from WHOIS results. Our tool uses RDAP, which provides structured data while respecting these privacy protections. You'll still see technical data (registrar, dates, nameservers) even when contact details are redacted.