WHOIS Lookup — How to Find Domain Registration Info and Owner

IP & Network — views

What Is WHOIS?

WHOIS (pronounced “who is”) is an internet query protocol used to look up registration information for domain names and IP addresses. A WHOIS query tells you who registered a domain, when it was registered, when it expires, and which registrar manages it.

What Information Does WHOIS Show?

Use tool.tl's free WHOIS lookup to retrieve:

  • Registrant info: Owner name and organization (if no privacy protection)
  • Contact email: Registrant and technical contact email addresses
  • Registrar: Which registrar holds the domain (GoDaddy, Namecheap, etc.)
  • Registration date: When the domain was first registered
  • Expiration date: When the domain expires — useful for spotting drop-catch opportunities
  • Name servers: Which DNS servers are authoritative for the domain
  • Domain status: Lock status, transfer eligibility flags

How to Do a WHOIS Lookup

  1. Go to tool.tl/whois
  2. Enter the domain name you want to look up (e.g., example.com)
  3. View the full WHOIS record instantly

WHOIS Privacy Protection

Many registrars offer "WHOIS privacy" or "domain privacy" as a free or paid add-on. When enabled, personal details (name, email, phone) are replaced with the registrar's proxy contact information, protecting the registrant's identity.

Since GDPR took effect in 2018, European registrants' personal data is automatically redacted from most WHOIS records to comply with privacy regulations.

Common Use Cases for WHOIS

  • Check domain availability and expiry: See when a domain expires to time a potential purchase
  • Contact a domain owner: If you want to buy a registered domain, WHOIS may reveal how to reach the owner
  • Investigate suspicious sites: Check the registration details of phishing sites or unfamiliar websites
  • Competitor research: Understand a competitor's domain age and registration history
  • Verify domain age: Older domains typically carry more SEO authority

Frequently Asked Questions

Why can't I see the owner's contact info?

Three possible reasons: (1) the registrant enabled WHOIS privacy protection; (2) GDPR compliance automatically hides EU registrant data; (3) some country-code TLDs (ccTLDs) don't publish WHOIS data publicly.

Is WHOIS lookup free?

Yes — tool.tl's WHOIS lookup is completely free, no account needed, results are instant.

What's the difference between WHOIS and DNS lookup?

WHOIS queries domain registration records (who owns it, when it expires). DNS queries domain resolution records (which IP address the domain points to). They query completely different databases. tool.tl also provides a free DNS lookup tool.