Domain WHOIS Lookup (Free)
Free WHOIS/RDAP lookup for any domain. Check the registrar, registrant, registration date, expiry date, and name servers instantly in your browser.
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.