What Is WHOIS
WHOIS is a publicly available database of registered domain names and IP addresses. When someone registers a domain or gets an IP address block, they're required to provide information that's publicly searchable through WHOIS.
WHOIS contains: domain/IP owner name, organization, contact information, registration dates, expiration dates, nameserver information, and other technical details.
WHOIS is maintained by Regional Internet Registries (ICANN, ARIN, RIPE NCC, etc.). Anyone can search it for free to find information about domains and IPs.
How to Do a WHOIS Lookup
Method 1: Use Our WHOIS Tool - Visit our WHOIS lookup tool. Enter domain name or IP address and get results instantly.
Method 2: Command Line (Windows/Mac/Linux) - Type: whois domain.com or whois IP_address. Results display in terminal.
Method 3: Online WHOIS Databases:
- icann.org WHOIS
- arin.net (IP addresses)
- ripe.net (European IPs)
- apnic.net (Asian/Pacific IPs)
- robtex.com (advanced WHOIS)
Protect Your WHOIS Privacy
Hide your domain registration details with privacy protection and VPN
Hide My IP NowWhat Information WHOIS Shows
Domain WHOIS Information:
- Domain owner/registrant name and contact information
- Administrative contact
- Technical contact
- Registration date and expiration date
- Nameserver information (where site is hosted)
- Registrar information (who registered it)
- DNSSEC status
IP WHOIS Information:
- IP block owner/organization
- Country of registration
- ISP or hosting provider
- Allocation dates
- Abuse contact
- Reverse DNS information
This information is designed to be public so people can find who operates a domain or IP block.
Why WHOIS Privacy Matters
WHOIS exposes personal information publicly. Your home address, phone number, and email are searchable unless you use privacy protection.
WHOIS Privacy Protection: You can enable WHOIS privacy when registering a domain. Your registrar's information replaces your personal details in WHOIS. Your information stays private.
When to Use Privacy: Personal blogs, websites, private projects—use privacy protection. Business websites often skip privacy to appear legitimate.
VPN + WHOIS Privacy: For maximum privacy, combine VPN with WHOIS privacy. This hides both your IP and domain registration details.
Privacy Limitations: WHOIS privacy protects against casual searches, but registrars keep records. Law enforcement can subpoena registrars for actual owner information.
Advanced WHOIS Queries
Find All Domains Owned by Person: Some advanced WHOIS tools let you search by registrant name to find all domains owned by one person.
Check Domain Expiration: WHOIS shows expiration date. Expired domains sometimes become available for registration.
Verify Legitimate Sites: Check WHOIS to verify a site's legitimacy. Phishing sites often use privacy protection or false information.
Research Competitors: Look up competitor domains to find their host, registrar, and technical setup.
Investigate IP Blocks: IP WHOIS shows who owns IP ranges, useful for understanding ISPs and hosting providers.
Frequently Asked Questions
Is WHOIS information always accurate?
Usually, but not guaranteed. Registrants can provide false information (though violates terms). Check multiple sources if accuracy is critical.
Can I hide my information from WHOIS?
Yes, enable WHOIS privacy when registering domain. Your registrar's info appears instead of yours.
How do I search WHOIS?
Use our <a href="/whois">WHOIS lookup tool</a> or command line whois command. Enter domain name or IP address.
Is WHOIS free?
Yes, WHOIS searches are free. WHOIS privacy protection costs extra ($5-15/year typically).