WHOIS Lookup
Enter a domain to see who it's registered with, when it was created and when it expires, and which nameservers it delegates to.
Overview
This tool queries RDAP (Registration Data Access Protocol), the modern, structured-JSON successor to the old text-based WHOIS protocol, via the free registry directory IANA publishes for exactly this purpose. Every registry (Verisign for .com, PIR for .org, and so on) runs its own RDAP server; this tool looks up the right one for the domain's TLD and queries it directly.
Because RDAP responses are structured data rather than freeform text, the registrar name, status codes, key dates, and nameservers can be extracted reliably instead of scraped from a differently-formatted text blob per registry.
Examples
A registered domain
example.com
Registrar: RESERVED-Internet Assigned Numbers Authority
How It Works
- Enter a domain name, e.g. example.com.
- Complete the verification check if shown.
- Click Look Up to query the domain's registry via RDAP.
- Review the registrar, status, key dates, and nameservers returned.
Use Cases
Checking domain expiration
Confirm when a domain is due for renewal before it lapses.
Identifying a domain's registrar
Find out which registrar a domain is registered through, e.g. before a transfer.
Verifying nameserver delegation
Confirm a domain's authoritative nameservers match what's expected after a DNS provider change.
Tips
- Some registrars redact registrant contact details from RDAP by default for privacy — this is normal and not a sign of a lookup failure.
- A domain that returns "does not appear to be registered" may still be reserved or in a registry hold state that RDAP doesn't fully expose.
FAQ
It queries RDAP, the structured-data protocol that's replacing classic text WHOIS at most registries, so the information is equivalent but returned as reliable structured fields instead of freeform text.
This lookup queries external registry infrastructure on your behalf, so a quick bot check helps keep the tool available and responsive for everyone.
Most registrars redact personal registrant details from public RDAP/WHOIS responses by default, in line with privacy regulations — this tool shows whatever the registry itself makes public.