Check domain registration details, registrar information, nameservers, creation & expiration dates instantly. Get complete WHOIS records for any domain name.
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example.com
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💡 What is WHOIS?
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Public Database: WHOIS is a query protocol that stores registration data for domains, IP addresses, and autonomous systems.
A WHOIS lookup is a query that retrieves publicly available registration information about a domain name from the WHOIS database. WHOIS (pronounced "who is") is a protocol maintained by ICANN (Internet Corporation for Assigned Names and Numbers) that stores data about domain registrations, IP address allocations, and autonomous system numbers.
When you perform a WHOIS lookup, you can discover who owns a domain, when it was registered, when it expires, which registrar manages it, and what nameservers it uses. This information is essential for domain research, cybersecurity investigations, trademark protection, and verifying the legitimacy of websites.
What Information Does WHOIS Provide?
A typical WHOIS record contains the following key information:
Field
Description
Domain Name
The full domain name being queried (e.g., example.com)
Registrar
The company where the domain was registered (e.g., GoDaddy, Namecheap)
Registration Date
When the domain was first registered
Expiration Date
When the domain registration expires
Updated Date
Last time the WHOIS record was modified
Nameservers
DNS servers responsible for the domain (e.g., ns1.cloudflare.com)
Status
Domain status codes (e.g., clientTransferProhibited, active)
Technical contact for the domain (often privacy-protected)
Note: Due to GDPR and privacy regulations, many domain owners now use privacy protection services that mask personal contact information in WHOIS records. In these cases, you'll see the registrar's privacy service contact details instead of the actual owner's information.
Common Use Cases for WHOIS Lookup
Domain Availability: Check if a domain is available for registration or already taken
Verify Ownership: Confirm who owns a specific domain for business or legal purposes
Expiration Monitoring: Track when domains expire to catch expiring domains or renew your own
Trademark Protection: Identify potential trademark infringements or cybersquatting
Contact Domain Owners: Find contact information to reach out about purchasing or partnerships
Security Research: Investigate suspicious domains for phishing, malware, or fraud detection
Competitor Analysis: Research competitor domains, registrars, and registration strategies
Historical Research: Understand domain history and previous ownership changes
Understanding Domain Status Codes
WHOIS records include status codes that indicate the domain's current state. Here are the most common ones:
clientTransferProhibited: Domain cannot be transferred to another registrar (protects against unauthorized transfers)
clientUpdateProhibited: Domain details cannot be modified (prevents unauthorized changes)
clientDeleteProhibited: Domain cannot be deleted (protects against accidental deletion)
clientHold: Domain is on hold and not resolving (often due to payment issues or legal disputes)
pendingDelete: Domain is in the deletion process and will soon become available
redemptionPeriod: Domain expired but can still be restored by the owner (usually 30 days)
ok / active: Domain is active and functioning normally with no restrictions
Frequently Asked Questions
Since GDPR took effect in 2018, most domain registrars offer WHOIS privacy protection by default. This masks personal contact details and replaces them with the registrar's privacy service information to protect owner privacy. Some extensions (like .us) still require public contact info.
WHOIS data is generally accurate, but not always. Domain owners are required to provide truthful information, but some may use fake details (which violates registrar policies). Additionally, privacy protection services legitimately obscure real contact info. For critical legal matters, you may need to file an RDAP request for authentic data.
Yes, WHOIS lookups work for virtually all domain extensions (TLDs) including .com, .net, .org, country codes like .uk or .de, and new gTLDs like .app or .dev. However, the level of detail and format varies by registry — some provide more comprehensive data than others.
Most registrars offer a "contact domain owner" form that forwards your message to the owner without revealing their email. Alternatively, you can look up the domain's website and use their public contact page. For legal matters, you can file a court-ordered disclosure request through the registrar.
WHOIS provides registration and ownership data (who owns the domain, when it expires, registrar info). DNS lookup provides technical records (IP addresses, mail servers, nameservers) that make the domain actually work. Both are useful but serve different purposes — WHOIS for business/legal research, DNS for technical troubleshooting.