Whois Lookup

What is WHOIS lookup?

WHOIS is a protocol for querying databases that store registration information about domain names and IP addresses. A WHOIS lookup reveals who registered a domain, when it was registered and when it expires, which registrar was used, and the nameservers it points to. This information is publicly available for most domains, though privacy protection services can mask the registrant's personal details.

The WHOIS system dates back to the early days of the internet when ARPANET maintained a directory of network users. Today, domain registrars are required to maintain WHOIS records for their domains. ICANN (Internet Corporation for Assigned Names and Numbers) oversees the WHOIS system for generic top-level domains like .com, .org, and .net.

Information in a WHOIS record

• Registrant — the person or organization that registered the domain.
• Registration date — when the domain was first registered.
• Expiration date — when the registration expires and must be renewed.
• Registrar — the company through which the domain was registered (like GoDaddy, Namecheap).
• Nameservers — the DNS servers that resolve the domain to an IP address.

How to use this tool

Enter a domain name (like example.com) and the tool queries the WHOIS database for that domain's registration record. The results show the registrant information (if not privacy-protected), registration and expiration dates, registrar details, and nameservers. Use this to check domain availability, verify ownership, or research when a domain might become available.

Domain privacy protection

Most registrars offer WHOIS privacy protection (also called domain privacy or WHOIS guard) that replaces the registrant's personal information with the privacy service's details. This prevents spam, identity theft, and unwanted solicitation. With GDPR regulations in Europe, many registrars now automatically redact personal information from WHOIS records.

Frequently asked questions

Is WHOIS information always accurate?

ICANN requires registrants to provide accurate contact information, but enforcement is inconsistent. Privacy protection services legally mask the data. Some domain owners provide deliberately inaccurate information (which technically violates the registration agreement and could result in domain suspension). GDPR has further complicated accuracy requirements by requiring data minimization.

Can I find out who owns any domain?

For domains without privacy protection, yes — the registrant's name, organization, email, and sometimes phone number are publicly visible. For privacy-protected domains, you will see the privacy service's information instead. Some country-code TLDs (like .de for Germany) have stricter privacy rules and may not display registrant details at all.