SEO Tool

WHOIS Lookup

Look up the registration record for any domain. Queries RDAP (the modern JSON-based replacement for WHOIS) and follows the IANA bootstrap to the right authoritative server for the TLD.

About

WHOIS is the protocol that's let you look up domain registrations since 1982. Since 2017 it's been replaced by RDAP (Registration Data Access Protocol) — same purpose, but JSON instead of free-form text, with proper authentication and standard rate limits. Under GDPR most registrant contact details are now redacted by default; if you need them you can usually contact the registrar directly through the published abuse address.

Backed by rdap.org's federated bootstrap — the request is forwarded to the authoritative RIR or registry RDAP server. JSON: /api/rdap?type=domain&query=example.com

See also: IP WHOIS, Domain Info, DNS Query.