Domain Whois Lookup
Query domain registration info including registrar, registration date, expiry date, DNS servers, etc.
Common Use Cases
- Check if a domain is already registered and assess availability
- View domain expiry dates to avoid losing domains to non-renewal
- Find registrar information to facilitate domain transfers
- Verify domain ownership for business partnerships or brand protection
- Analyze competitors' domain strategies and registration timelines
What is Whois?
Whois is a query and response protocol widely used to look up registration information of internet resources. Through Whois, you can get a domain's registrar, registration date, expiry date, DNS servers, and more. Due to privacy regulations like GDPR, some registrant information may be hidden.
Frequently Asked Questions
Why can't I find registrant information?
Due to GDPR and other privacy regulations, most registrars have redacted personal registrant information from Whois records. You can still view public information like registrar, registration dates, and nameservers.
How often is Whois information updated?
Update frequency depends on the registrar and registry operations. Typically, information is updated within 24-48 hours after domain registration, renewal, transfer, or information changes.
Can I renew a domain after it expires?
After expiration, domains typically enter a 30-day Grace Period for renewal, followed by a Redemption Period, and finally deletion. It's recommended to renew before expiration to avoid losing your domain.
About the Whois Protocol
The Whois protocol dates back to 1982 on ARPANET, making it one of the oldest application-layer protocols on the internet. It was designed to query registration information for domains, IP addresses, and autonomous system numbers.
Over the years, the Whois system has evolved from centralized to distributed. Currently, multiple Registries manage their own Whois databases (e.g., Verisign for .com/.net, CNNIC for .cn).