Acceptable Use Policy

Last updated: 13 September 2026

Only test systems you own or have explicit, documented permission to test. The subdomain finder, DNS lookups and webhook tester touch real systems, and unauthorised scanning or probing can be a criminal offence. What you look up and who you send requests to is your responsibility alone.

You must not use the Site to:

• Attack, overload or deny service to any system.
• Do reconnaissance in preparation for intrusion, fraud, phishing or malware.
• Harass, dox, or gather information about individuals without consent.
• Circumvent rate limits, SSRF protections or other technical restrictions.
• Relay traffic to private, internal or metadata addresses.
• Scrape, bulk-automate or resell the Site or its output.
• Do anything unlawful under the laws that apply to you.

Results come from public sources (certificate transparency logs, public DNS) or a request you asked us to make, and may be incomplete, stale or wrong. These tools exist for lawful administration, education, research and debugging; we don't authorise, endorse or assist unlawful use, we don't monitor what you look up, and we accept no liability for how you use the Site or its output. See also our Terms of Use.

Server-backed tools are rate-limited, and we may block or refuse access to anyone breaching this policy without notice, and may cooperate with lawful requests from authorities.