Quick start
- Enter a domain, IPv4 address, or IPv6 address.
- Select Lookup or press Enter.
- Use Information for the normalized report and Raw Data for the complete returned JSON.
- Copy or export the raw result when you need it for a ticket or investigation.
- Repeat a recent query from history rather than entering it again.
Understanding results
- Domain results can include registrar, registration and expiry dates, status codes, nameservers, contacts, DNSSEC, and source attribution.
- IP results can include the network allocation, organization, regional registry, route, location, and related metadata.
- Registrars and privacy services frequently redact contact fields; an absent value is not evidence that no registrant exists.
- Dates and status names are normalized for display, while Raw Data preserves the response structure supplied by the lookup service.
Responsible lookup tips
- WHOIS and RDAP data is point-in-time public registry data and can be delayed, redacted, or inconsistent across sources.
- Confirm important ownership or incident-response findings with the authoritative registrar or regional internet registry.
- Respect provider rate limits and applicable privacy rules when using contact or registration information.
- A deep link such as
/whois-lookup/example.comperforms that query on load.
Privacy and saved data
The query is sent to the configured Cloudflare Worker and its upstream lookup sources. The most recent 100 queries and a 30-minute result cache are stored locally in this browser. Exported JSON is saved wherever your browser downloads files and is then outside the app's storage controls.
Troubleshooting
- Private, reserved, newly registered, or recently changed resources may return limited or no public data.
- If the service reports a rate limit or timeout, wait before retrying and use a cached result when suitable.
- For a malformed query, remove protocols, paths, ports, and surrounding punctuation; enter only the domain or IP address.