Free tool
Domain lookup.
Check whether a domain is registered, list its name servers, find its current IP, and look up IP geolocation/ASN — all in one search. Pick a single lookup or run them all together.
How it works. Registration data comes from RDAP — the modern WHOIS — via rdap.org, which bootstraps to the right registry. Name servers and IPs come from Google’s public DNS-over-HTTPS resolver (dns.google). IP info comes from ipapi.co, with ip.guide as a fallback. Everything runs in your browser — we don’t see or log your queries.
If you paste an IP instead of a domain, the IP-info lookup will run against it directly.