Check domain registration, registrar, and expiry info
Whois Lookup queries the public WHOIS/RDAP registration records for a domain name and returns who registered it, when it was created, when it expires, and which registrar and name servers it uses. Enter a domain like example.com and the tool contacts the responsible registry and registrar servers to pull back fields such as Registrar, Creation Date, Updated Date, Registry Expiry Date, Domain Status codes (e.g. clientTransferProhibited), and the authoritative NS records.
It is used by domain buyers checking availability and expiry, IT and security teams investigating suspicious domains, and developers verifying that a domain's registration and name servers are configured correctly before launch or renewal.
WHOIS is a query-and-response protocol (originally defined in RFC 3912, running on TCP port 43) that returns registration details for a domain. Every top-level domain is served by a registry, and each registry points to the sponsoring registrar's WHOIS server for the specific domain, so a full lookup often involves two hops: the registry answers with the registrar and key dates, and the registrar answers with fuller contact and status data.
Since roughly 2018, most registries have migrated to RDAP (Registration Data Access Protocol, RFC 7482 onward), a modern JSON-over-HTTPS replacement that returns structured, standardized fields and better handles internationalized data. This tool uses RDAP where a TLD supports it and falls back to classic port-43 WHOIS otherwise.
Note that GDPR and ICANN's Temporary Specification cause most registrars to redact personal registrant contact details (name, email, address) behind privacy or proxy services. Objective fields such as creation date, expiry date, registrar, status codes, and name servers remain publicly visible.
Yes, it is completely free with no sign-up. The domain you enter is sent to the relevant WHOIS/RDAP server to fetch the record, since that lookup cannot happen locally, but we do not require an account or store your query history.
Because of GDPR and ICANN privacy rules, most registrars redact personal contact details or replace them with a privacy/proxy service. This is normal and expected; dates, registrar, and status fields are still shown.
These are EPP status codes set by the registrar or registry. clientTransferProhibited is a common lock preventing the domain from being transferred to another registrar without first being unlocked, which protects against unauthorized transfers.
Yes. If the lookup returns no matching record (often shown as No match or Domain not found), the domain is likely unregistered and available. A full record means it is already taken.
The Registry Expiry Date is the registration deadline, but most registrars offer a grace and redemption period after it. A domain can also stop resolving earlier if the owner changes name servers or DNS records.
No. Fields and formatting vary by registry. Country-code TLDs such as .in or .de may return different labels or restrict some data, and a few registries expose limited information or RDAP only.
WHOIS shows administrative and registration data (who owns it, when it expires, which registrar). DNS Lookup shows the live technical records (A, AAAA, MX, TXT) that route traffic and email for the domain.