WHOIS Lookup

Instantly look up domain registration details - registrar, owner, nameservers, creation date, expiry date, and more for any domain.

What information does WHOIS provide?

  • Registrar - the company where the domain is registered
  • Registration and expiry dates
  • Nameserver records (DNS)
  • Domain status codes (clientTransferProhibited, etc.)
  • Registrant contact information (if not privacy-protected)
  • Administrative and technical contact details

WHOIS and domain security

WHOIS lookups are essential for cybersecurity investigations. Security researchers use WHOIS to identify domain ownership during phishing investigations, check registration dates of suspicious domains (newly registered domains are often malicious), and trace infrastructure used in attacks.

Many registrars now offer WHOIS privacy protection (GDPR redaction in Europe), which replaces personal contact information with proxy details while still providing registrar and nameserver information.