WHOIS
WHOIS Lookup Tool
Queries WHOIS servers from the StackAtlas server (not browser-local). Don’t use production secrets.
Domain / IP Port 43 WHOIS
Query
Paste a domain like example.com or an IP like 8.8.8.8.
Connection
Uses IANA to find the correct WHOIS server when possible.
Server used
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Elapsed
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Raw WHOIS response
—IANA referral (if used)
—What WHOIS is
WHOIS is a registry/registrar lookup protocol (port 43). Results vary by TLD and may be redacted for privacy.
Privacy & redaction
- Many registrars redact registrant info (privacy/proxy services).
- Use WHOIS mainly for registrar, name servers, and dates.
- For modern structured data, RDAP may be available for some registries.
Tips
- Some WHOIS servers rate-limit; retry later if it fails.
- Domain status values often include ICANN reference URLs.
- Compare name servers with your DNS provider for troubleshooting.