Network
Domain WHOIS Lookup
Look up WHOIS information for any domain name using the RDAP protocol. Check registrar, registration date, expiry date, name servers, and more.
When to use domain WHOIS
- Check expiry dates: Monitor your own domains and competitors' to catch renewals before they lapse. An expired domain can be snapped up by a third party.
- Identify the registrar: Find out which registrar manages a domain — useful before a transfer or when managing multiple domains.
- Verify name servers: Confirm DNS configuration or check propagation after a name server change.
- Even with GDPR redaction, corporate domains often still expose the registrar and organization name.
Frequently Asked Questions
Side Note — The History of Domain Names and the Birth of WHOIS
The first .com domain, symbolics.com, was registered on March 15, 1985 — before the commercial internet existed. Network Solutions (NSI) had a monopoly on registrations, which were initially free. In 1995 NSI began charging $100/year, establishing that domain names had real monetary value. Today over 1,500 TLDs exist and tens of thousands of domains are registered every day.
WHOIS began as a simple directory for identifying who managed a given host. As the internet grew, it became essential for tracking spam, intellectual property violations, and domain disputes. The GDPR's arrival in 2018 fundamentally changed the picture: registrant contact data became protected personal information, and most registrars began redacting it. RDAP was designed to meet these modern demands — it runs over HTTPS, returns structured JSON, and supports authentication and access control.