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WHOIS Lookup

A WHOIS lookup shows who a domain or IP address is registered to: the sponsoring registrar, registration and expiry dates, status codes and nameservers. Modern lookups use RDAP, the structured successor to the WHOIS protocol, which returns the same registry data as clean JSON. Enter a domain or IP below.

WHOIS vs RDAP

WHOIS is a protocol from the early internet: plain text over port 43, with every registry formatting its responses differently. RDAP (Registration Data Access Protocol) is the IETF-standardized successor defined in RFC 9083: the same registries serve the same registration data, but as structured JSON over HTTPS with consistent field names and proper redirects to the authoritative source.

This tool queries RDAP directly, so results look the same whether you look up a .com domain, a country-code domain or an IP address allocation.

What WHOIS Reveals (and What It Doesn't)

A lookup on a domain reliably shows:

  • Registrar: the company the domain is registered through.
  • Key dates: registration, last change and expiration.
  • Status codes: locks like "client transfer prohibited" that protect the domain.
  • Nameservers: where the domain's DNS is hosted.

For an IP address, it shows the organization the range is allocated to, the network boundaries (range and CIDR) and the allocation type.

What it usually doesn't reveal is the owner's identity: since GDPR, personal names, emails and street addresses are privacy-redacted or replaced by a proxy service in almost all public records.

Need a domain's live records instead? Run a DNS lookup →

Frequently Asked Questions

What is a WHOIS lookup?
A WHOIS lookup queries the public registration records for a domain or IP address. For domains it returns the sponsoring registrar, registration and expiration dates, status codes and nameservers; for IP addresses it returns the organization the range is allocated to and the network's boundaries.
Why does WHOIS not show the owner's name anymore?
Since GDPR took effect in 2018, registries and registrars redact personal data from public records. Most domains now show "REDACTED FOR PRIVACY" or a privacy-proxy service instead of the registrant's name, email and address. The registrar, dates and status remain public.
What is RDAP?
RDAP (Registration Data Access Protocol) is the IETF-standardized successor to the WHOIS protocol. It serves the same registry data as structured JSON over HTTPS, with consistent field names and proper redirects between registries. This tool queries RDAP directly.
How do I find out when a domain expires?
Run a WHOIS lookup on the domain and check the expiration entry in the timeline; the date comes straight from the registry. Note that many domains renew automatically, and most pass through a grace and redemption period after expiry before they are released.
Can I look up who owns an IP address?
Yes. Enter any public IP address. The lookup returns the regional registry's allocation record: the organization the range is assigned to, the network range and CIDR, and the allocation type. It identifies the network operator, not an individual user.
Do you log my lookups?
No. Queries run server-side, so your IP address is never sent to the registry, and responses are cached briefly to avoid redundant registry traffic. We do not log or store what you look up.

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