WHOIS / RDAP Lookup

Look up domain registration data over RDAP - the structured, JSON successor to WHOIS - including registrar, status codes, dates and nameservers.

Live lookup DNS & Domain Queries a public API
Registered domain only - not a subdomain.
Try:

Result

Ready to query
Press "Run lookup" to fetch registration data for example.com over RDAP. The bootstrap service redirects to whichever registry is authoritative for the TLD.

About WHOIS / RDAP Lookup

RDAP is the structured replacement for WHOIS: same registration data, delivered as JSON over HTTPS with proper referrals instead of free-text scraped from port 43. This tool queries the RDAP bootstrap service, which redirects to whichever registry is authoritative for the TLD.

Status codes worth knowing

clientTransferProhibited is the registrar lock - normal and desirable. pendingDelete and redemptionPeriod mean the domain has expired and is in the grace window before it drops. serverHold means the registry has removed it from the zone: the domain resolves nowhere, usually after an abuse complaint or unverified registrant contact.

Why contact data is missing

Since GDPR, gTLD registries redact registrant name, email and address from public RDAP output. Some ccTLDs publish more, some less. Getting behind the redaction requires a documented request to the registrar, not a better lookup tool.

Common use cases

  • Checking an expiry date before a domain silently lapses.
  • Identifying the registrar to contact about abuse or a transfer.
  • Confirming nameserver delegation at the registry, above your DNS provider.
  • Verifying DNSSEC is signed at the parent zone.

Edge cases and gotchas

  • Not every ccTLD publishes RDAP. Some legacy registries remain WHOIS-only, and those lookups will return not found here.
  • Registry data can lag registrar data by minutes to hours after a change.

Frequently asked questions

Why does the registry show different nameservers than my DNS provider?
The registry holds the delegation. If it disagrees with your provider, the delegation was not updated - and the registry always wins, because resolvers follow it.
Can I look up an IP address here?
Not in this tool. IP and ASN RDAP is served by the RIRs (ARIN, RIPE, APNIC and so on) and is a separate query path.