WHOIS & RDAP looks up the registration record for any domain — who registered it, when it was created, when it expires, which registrar holds it, and what nameservers it points to. It uses the modern RDAP protocol with automatic fallback to traditional WHOIS, so it works reliably across all TLDs.
Whether you're vetting a domain before buying it, checking expiry on your own portfolio, investigating a suspicious URL, or doing brand protection research, this gives you the authoritative registration data in a clean, structured format.
What you can do
- lookup_domain — get the full registration record for any domain: registrant info, creation and expiry dates, registrar, nameservers, registry status, and an availability signal for unregistered domains
Who it's for
Domain investors checking availability and expiry dates. Security analysts investigating malicious or suspicious domains. Brand protection teams monitoring for lookalike or infringing registrations. Developers and sysadmins auditing DNS configurations. Anyone buying or selling a domain who wants the registration history.
How to use it
- Run lookup_domain with any domain name (e.g. "example.com") — no need for https:// or www
- Check the expires field to see when a domain renews or lapses
- Check the status field for registry lock states (clientTransferProhibited, etc.)
- Add include_raw: true to see the full RDAP or WHOIS payload for detailed investigation
Getting started
All lookups are free and ready to use without any setup. Pass the domain name and the tool returns structured registration data, including an availability signal for domains not currently registered.
