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VPN Kill-Switch & Connection-Drop Test
A kill switch should cut your internet when the VPN drops instead of falling back to your real connection. Run this test, drop your VPN on purpose, and watch what your connection really does.
- Connect your VPN and make sure it is working.
- Press Start. The first IP address we see is treated as your VPN's address.
- Disconnect or interrupt your VPN (turn it off in the app, switch Wi-Fi networks, or block the VPN server).
- Watch the result. Blocked traffic means the kill switch held. A different IP address means your real address was exposed.
Keep this tab visible and your screen awake. Browsers slow down background tabs, which can hide short leaks. Use the sound alert, or run the test from a second device.
How this test works
This page asks our server for the IP address it sees every few seconds. Your VPN's address is the baseline. If your VPN drops and your device keeps working, the address changes to your real one and the page flags it. If the kill switch cuts traffic, the requests fail instead, which is the correct result. Nothing is stored, and the IP address is read from the connection itself.
What this cannot tell you
This checks the browser's connection only, and only while this tab is running. An app-level kill switch may protect some apps but not others, a very short leak between checks can be missed, and background tab throttling can hide events. It also does not test DNS or WebRTC leaks, so run those checks as well. Changing VPN servers deliberately also changes your IP address and will be reported as a different IP.
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