WHOIS Lookup
Find domain registration details including registrar, creation date, expiration, and nameservers.
About WHOIS Lookup
WHOIS is a protocol for querying databases that store registration information about domain names and IP addresses. A WHOIS lookup can reveal:
- Registrar - The company where the domain was registered
- Registration Date - When the domain was first registered
- Expiration Date - When the domain registration expires
- Nameservers - DNS servers that handle the domain
- Registrant Info - Owner contact information (often privacy-protected)
Note: Many domain owners use privacy protection services that hide personal contact information.
What is WHOIS Lookup?
WHOIS is a public protocol that queries databases storing registration information about domain names and IP address blocks. A WHOIS lookup reveals who registered a domain, when it was created and when it expires, which registrar was used, and the nameservers handling the domain's DNS. It's an essential tool for verifying domain ownership, investigating suspicious websites, and checking domain availability.
WHOIS data is maintained by domain registrars and regional internet registries. While many domain owners use privacy protection services to mask their personal contact information, WHOIS still provides valuable technical details about domain configuration, registration dates, and the registrar of record.
What You Can Learn from WHOIS
- Registration dates - When the domain was first registered and when it expires
- Registrar - Which company the domain was registered through (GoDaddy, Namecheap, Cloudflare, etc.)
- Nameservers - The DNS servers handling the domain, which often reveals the hosting provider
- Domain status - Whether the domain is active, locked, pending transfer, or in redemption
- Contact info - Registrant details (often privacy-protected for personal domains)
Frequently Asked Questions
Why does WHOIS show privacy protection instead of owner details?
Many domain registrars offer WHOIS privacy (also called domain privacy or WHOIS guard) that replaces the registrant's personal information with the privacy service's details. This protects domain owners from spam, unwanted solicitation, and potential identity theft. GDPR regulations have also led to many registrars redacting personal information by default for EU registrants.
How can I check if a domain name is available?
If a WHOIS lookup returns "No match for domain" or similar, the domain is likely available for registration. However, some premium or reserved domains may not appear in WHOIS but still be unavailable. For the most accurate availability check, search directly at a domain registrar.
Can I look up who owns an IP address?
Yes, WHOIS works for IP addresses too. An IP WHOIS lookup shows the organization that owns the IP block, the regional internet registry (ARIN, RIPE, APNIC, etc.), and network allocation details. Try our IP Lookup tool for geographic location data about any IP address.