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Free tool
Enter any domain to see what's publicly visible about it, registrar details, DNS configuration, and the technologies it's running. All checks are passive and use only public data sources, the same information anyone could look up manually.
Passive checks only, we never send traffic to the domain beyond a single standard page request, the same as visiting it in a browser. A full analysis can take up to ~10 seconds.
By using this tool, you agree to our Terms of Service , only run it against something you own or are authorized to assess.
This tool surfaces what's public. A real assessment goes further, talk to us about a full security review.