WHOIS & RDAP Lookup

Look up domain WHOIS/RDAP info: registrar, creation date, expiry, and nameservers. Free domain lookup tool.

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Registration

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Nameservers

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Entity

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RDAP JSON
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Tool Features

Related Guides

Differences between RDAP and WHOIS Check DNS as well Check SSL expiry as well
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RDAP / WHOIS Domain Lookup

Query RDAP (Registration Data Access Protocol) for any domain to retrieve the registrar, registration and expiry dates, nameservers and status flags. RDAP is the modern replacement for WHOIS, with structured JSON output. Critical statuses like clientHold (domain suspended) and pendingDelete are flagged, and privacy-masked registrant data is marked as such.

How It Works

For about 30 TLDs we query the registry's own RDAP server directly; other TLDs go through the rdap.org redirector, and .kr goes to KISA's RDAP server (its WHOIS API only when RDAP fails). Some ccTLDs (.de, .jp and others) publish no RDAP at all, and we say so instead of reporting the domain as unregistered. Status flags, dates and entities are extracted and interpreted, and critical statuses like clientHold and pendingDelete trigger warnings.

FAQ

What is the difference between RDAP and WHOIS?

WHOIS is a legacy text-based protocol from the 1980s. RDAP is its modern replacement offering structured JSON responses, standardized query/response formats, internationalization support, and better access control. ICANN mandated RDAP support for all gTLD registries.

What does clientHold status mean?

ClientHold means the registrar has suspended the domain's DNS resolution. Even if your DNS records are correct, the domain will not resolve. Common causes: unpaid renewal fees, abuse reports, legal disputes, or verification failures. Contact your registrar to resolve.

Why is registrant information hidden?

GDPR and ICANN's Temporary Specification require registrars to redact personal data from public RDAP/WHOIS responses. Registrant name, email, and address are replaced with "REDACTED FOR PRIVACY". Legitimate access requires submitting a verified request to the registrar.