WHOIS Lookup

BetaThis tool is in beta. Some features may change or have limited functionality.
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Look up domain registration details including registrar, creation date, expiry date, nameservers, and DNSSEC status using the public RDAP protocol.

Why Use WHOIS Lookup?

WHOIS lookup is a fundamental tool for security researchers, system administrators, and domain investors. It reveals who owns a domain, when it was registered, when it expires, and which nameservers it uses. This information is crucial for investigating suspicious domains, verifying business legitimacy, planning domain acquisitions, and troubleshooting DNS issues. Our tool uses the modern RDAP protocol, which provides structured, machine-readable data and is replacing the legacy WHOIS text protocol.

Frequently Asked Questions

What is WHOIS?
WHOIS is a protocol for querying databases that store registration information about domain names and IP addresses. It shows who registered a domain, when it was created, when it expires, and the technical details like nameservers. RDAP is the modern replacement for WHOIS, providing structured JSON responses.
Why is some WHOIS data hidden?
Many domain registrars offer privacy protection services that replace the registrant's personal information with proxy details. Additionally, GDPR regulations require registrars to redact personal data for European registrants. This is why you may see 'REDACTED FOR PRIVACY' in some fields.
What do domain status codes mean?
Domain status codes indicate the current state of a domain. Common statuses include: clientTransferProhibited (transfer locked by registrar), serverDeleteProhibited (deletion locked by registry), active (domain is live and resolving), and pendingDelete (domain is being deleted).
What is DNSSEC?
DNSSEC (Domain Name System Security Extensions) adds cryptographic signatures to DNS records to prevent DNS spoofing attacks. When DNSSEC is 'Signed', it means the domain's DNS responses can be verified for authenticity, protecting users from being redirected to malicious sites.
Does WHOIS work for all domain extensions?
Most common TLDs (.com, .net, .org, country codes) support WHOIS/RDAP queries. However, some newer or country-specific TLDs may have limited RDAP support. If a lookup fails, the TLD's registry may not provide RDAP access.