WHOIS Lookup

A WHOIS lookup tool retrieves domain registration data including registrar, registration date, expiry date, and nameservers for any domain or IP address.

This tool uses RDAP (Registration Data Access Protocol), the modern successor to the legacy WHOIS protocol. RDAP returns structured data and provides more consistent results across all TLDs. Results include registration and expiry dates, registrar information, nameservers, and any contact details not redacted under GDPR privacy protections.

Frequently Asked Questions

What is WHOIS?

WHOIS is a protocol and database system that stores registration information for domain names and IP addresses. It shows who registered a domain, when it expires, which registrar was used, and the nameservers in use.

Why is some WHOIS data redacted?

Since GDPR took effect in 2018, most domain registrars redact personal contact information from public WHOIS records to protect registrant privacy. You will often see a privacy service or registrar proxy instead of real owner details.

What is the difference between WHOIS and RDAP?

RDAP (Registration Data Access Protocol) is the modern replacement for the older WHOIS protocol. It returns structured JSON instead of plain text, supports internationalized domain names better, and provides more consistent results. whatismyip.technology uses RDAP.

Can I find out who owns a domain?

You can find registrar, registration date, expiry date, and nameservers for almost any domain. Personal contact details are often hidden behind privacy protection since 2018. For older registrations or certain ccTLDs, more data may be available.