One click — we show the DNS resolver your requests go through. If it is not your VPN resolver, your DNS leaks.
When DNS requests bypass the VPN tunnel and go to your ISP resolver, your browsing history can be observed even while connected to a VPN.
We read the Cloudflare network trace your browser receives — it shows the resolver and network that handled the request.
Enable "DNS over VPN" / custom DNS in your VPN client and re-run the test. Our bot sends ready configs with secure DNS included.