Check domain registration details, owner information, registrar, nameservers & expiration dates
WHOIS is a query and response protocol used to search databases that store information about registered internet resources, including domain names, IP addresses, and autonomous systems. Our free WHOIS lookup tool helps you instantly find domain registration details, ownership information, registrar contacts, nameserver settings, and expiration dates.
Whether you're checking domain availability, verifying DNS configurations, investigating potential trademark infringement, or researching IP address ownership, WHOIS lookup provides essential publicly available registration data.
View domain creation date, last update, and expiration date to track ownership history
Find domain owner information (when not privacy-protected) including name and organization
Identify the domain registrar, registration authority, and WHOIS server details
View DNS nameserver configurations and hosting infrastructure details
Query WHOIS data for IP addresses to find network ownership and allocation info
Check if a domain is available for registration or currently owned
Complement your WHOIS research with our other network diagnostic and information tools:
WHOIS lookup is a query protocol that searches databases containing registered domain names and IP addresses. It reveals domain ownership, registration date, expiration date, registrar information, nameservers, and contact details. Our free WHOIS tool instantly queries these databases using ICANN-approved protocols to provide comprehensive domain registration information for any website or IP.
Yes, WHOIS lookup is 100% free and completely legal. ICANN (Internet Corporation for Assigned Names and Numbers) mandates that WHOIS data be publicly accessible for transparency and accountability. You can search any domain or IP address without registration, payment, or legal concerns. Our tool complies with all GDPR and privacy regulations while providing publicly available information.
WHOIS privacy protection hides personal contact information to prevent spam, identity theft, phishing attacks, and unwanted solicitation. GDPR regulations in Europe and privacy laws worldwide require registrars to redact personal data from public WHOIS records. Domain owners can also purchase WHOIS privacy services ($8-15/year) from their registrar to mask their details and protect their identity online.
WHOIS lookup reveals: domain name, IP address, registration status, nameservers, registrar details, creation date, expiration date, last update date, hosting provider, organization name, AS number, geographic location (country, region, city), timezone, and registrant contact information (if not protected). Use our browser info tool and VPN detection for additional network analysis.
Enter the domain name in our WHOIS lookup tool above. If the domain is registered, you'll see full registration details including owner and expiration date. If it shows 'No match' or returns no results, the domain is likely available for registration. You can then register it through accredited registrars like GoDaddy, Namecheap, Google Domains, or Cloudflare for $8-15/year.
Yes, WHOIS records display exact domain expiration dates along with creation and last update dates. This helps identify domains nearing expiration that might become available for registration (drop-catching). Monitoring expiration dates is crucial for domain investors and businesses to avoid losing valuable domains. Set reminders 60-90 days before expiration to ensure timely renewal.
Nameservers are DNS servers that translate domain names to IP addresses, controlling where your website traffic goes. WHOIS results show which nameservers manage a domain's DNS settings. Common nameservers include Cloudflare (ns1.cloudflare.com), Google Cloud DNS, AWS Route 53, or hosting provider nameservers. Changing nameservers redirects domain traffic to different hosting servers - use our DNS lookup tool to analyze nameserver configurations.
Purchase WHOIS privacy protection (domain privacy or private registration) from your domain registrar during or after registration. This service replaces your personal contact information with the registrar's proxy details, protecting your name, address, phone, and email from public view. Most registrars offer this for $8-15/year, while some (like Google Domains, Cloudflare) include it free. GDPR automatically redacts personal data for EU residents regardless of privacy settings.
Our tool supports single domain/IP lookups for optimal speed and accuracy. For bulk queries, use our search history feature that remembers your recent 10 lookups with autocomplete. Export each result to CSV using the CSV button for record-keeping and comparison. For large-scale bulk WHOIS operations (100+ domains), consider enterprise WHOIS API services from ICANN-accredited providers.
WHOIS lookup reveals domain registration and ownership information (registrar, expiration, owner details, privacy status). DNS lookup shows technical DNS records (A, AAAA, MX, CNAME, TXT, NS records) that control how the domain functions for email, websites, and services. Use WHOIS to find who owns a domain and when it expires. Use DNS lookup to see how it's configured technically. Combine both tools with our SSL checker for comprehensive domain analysis.