How to use WHOIS Lookup
- Start by entering a domain or IP in WHOIS Lookup.
- Run it, and WHOIS Lookup issues the RDAP lookup directly from your browser.
- Read the response WHOIS Lookup shows below — it comes from the public RDAP service, not from this site.
About this tool
WHOIS Lookup is a static, browser-based client. WHOIS Lookup queries RDAP — the structured successor to WHOIS — live from your browser against the public RDAP service.
Where a registry withholds contact details, WHOIS Lookup reports that rather than guessing. The lookup is sent from your browser to the public RDAP service; this site has no backend and never receives it, and a network connection is required.
Frequently asked questions
What does WHOIS Lookup do?
WHOIS Lookup runs a live RDAP lookup from your browser and displays the registration details the registry publishes.
Does WHOIS Lookup cost anything?
No — WHOIS Lookup is completely free, with no sign-up and no hidden limits.
Does WHOIS Lookup query an external service?
Yes — WHOIS Lookup sends a live RDAP lookup from your browser to the public RDAP service. This site has no backend and never receives it, and the lookup needs a connection.
Where does WHOIS Lookup get its registration data?
WHOIS Lookup calls the public RDAP service live from your browser — the modern, structured replacement for WHOIS; most registrant fields are redacted by registries.