DNS Resolver Diagnostic
This probe runs DNS lookups from our server runtime and shows which resolver IPs those checks used. It is useful as supporting evidence, not definitive proof of your browser, device, or VPN DNS path.
What This Tool Does
Our DNS resolver diagnostic shows which resolver IPs are involved when our server runtime performs specific DNS checks. This can provide useful context during privacy or VPN troubleshooting, but it is not the same as a direct browser-side DNS leak measurement. Treat it as a supporting signal, not a definitive verdict.
Common Use Cases
- Gather extra context while troubleshooting VPN privacy behavior
- Compare observed resolver IPs with your expected provider path
- Spot surprising upstream resolver behavior in server-side checks
- Diagnose resolver differences after VPN or network changes
- Pair server-side resolver observations with browser-side privacy tests
Frequently Asked Questions
Is this a definitive DNS leak test?
No. This tool reflects resolver IPs seen from our server-side probe path, not necessarily the resolver path used by your browser, operating system, or VPN client. Use it as supporting evidence alongside a browser-side or VPN-native DNS leak test.
Why might the resolver IPs look unexpected?
Recursive resolvers, upstream forwarding, DNS-over-HTTPS, VPN routing, and hosting-provider behavior can all influence what appears here. An unexpected result is a cue to investigate further, not automatic proof of a leak.
What should I use for a definitive result?
Use a browser-side or VPN-native DNS leak test that creates per-session query challenges tied to your own client path. That is the right way to measure end-user DNS behavior directly.