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Terms of Service
Conditions for using check.systems. By using the site you agree to these terms.
Last updated: 2026-05-27.
Agreement
By using check.systems you agree to these terms. If you don't agree, don't use the site. These tools are provided for legitimate network troubleshooting and educational purposes only.
Acceptable use
You may use these tools to:
- Troubleshoot your own network connection
- Perform legitimate network diagnostics on hosts you own or have permission to test
- Learn about networking, DNS, IP addressing, and related topics
You may not use these tools to:
- Probe, scan, or attack hosts without authorization
- Circumvent rate limits or abuse the service
- Automate bulk requests that degrade service for others
- Use results to facilitate illegal activity
Service availability
We aim for high availability but make no uptime guarantees. Tools may be unavailable during maintenance or infrastructure issues. We reserve the right to rate-limit or block access to users who abuse the service.
Disclaimer
Tools are provided "as is." Diagnostic results are informational only — not a substitute for professional network analysis. Geolocation data is approximate. We are not liable for decisions made based on tool output.
Affiliate links
Some links on this site are affiliate links. We earn a commission if you purchase through them, at no extra cost to you. We only recommend products we believe are genuinely useful. Affiliate relationships do not influence our tool results or editorial content.
Intellectual property
Site content, design, and code are owned by check.systems. Articles may be cited with attribution and a link. Do not reproduce content wholesale without permission.
Privacy
Your use of check.systems is also governed by our Privacy Policy, which describes what we collect, why, and how long we keep it.
Changes
We may update these terms at any time. Continued use of the site after changes constitutes acceptance. Questions: contact@check.systems.