WHOIS lookup
Looks up domain registration details: registrar, registration and expiry dates, and domain status. The data comes from RDAP, the official successor to WHOIS.
Look up domain registration data such as registrar, dates and status. Powered by RDAP, the official successor of WHOIS.
Steps and notes
What is WHOIS lookup?
Look up registration data for a domain — registrar, creation and expiry dates, status codes and nameservers — using RDAP, the official successor to classic WHOIS. RDAP returns structured, machine-readable responses instead of free-form text, so the results are consistent and easy to scan.
- Enter the domain (pasting a full URL works — only the host name is used)
- Click lookup WHOIS or press enter
- Copy the registration details
- The lookup is made by this site's server-side endpoint, so it requires the site to be deployed; local development requests will fail
- The registration data is returned as the endpoint provides it; different suffixes (.com / .cn / .io …) vary in detail and may not all include an expiry date
Frequently asked questions
- How is RDAP different from WHOIS?
- Both answer the same questions, but RDAP uses standardised HTTP+JSON endpoints run by registries, replacing the fragmented plain-text WHOIS protocol. This tool speaks RDAP only, which keeps parsing reliable.
- Why can some domains not be looked up?
- RDAP coverage is still growing: some country-code registries do not yet expose an RDAP server, in which case the lookup fails even though the domain exists.
- Why do I no longer see the owner's name and address?
- GDPR and similar rules made registries redact personal contact data. You still get registrar, dates and status — the operational facts — but not private individuals' details.
Category: Network
Network & IP workflow
IPv4 Subnet Calculator → IPv4 range expander → IPv4 address converter → IPv6 ULA generator → MAC address generator → MAC address lookup → WHOIS lookup