Terms of Service
Last updated: 15 August 2026
By using Know Your Internet you agree to these terms. If you do not agree, do not use the service.
Permitted use
- You may use the tools for lawful, diagnostic, educational and defensive security purposes.
- Network tools (port checks, header fetches, WHOIS, DNS) must only be used against systems you own or are authorized to test.
- You may not use the service to attack, exploit, harass or defraud third parties.
No warranty
All results are provided “as is” and “as available” without any warranty. Geolocation is approximate, detection results are heuristic, and blacklists may be outdated or contain false positives. You are responsible for how you use the results.
Limitation of liability
To the maximum extent permitted by law, Know Your Internet and its operators are not liable for any damages arising from your use of, or inability to use, the service or its results.
Changes
We may update these terms from time to time. Continued use after changes are posted constitutes acceptance of the updated terms.