What your connection reveals
One test for your IP, DNS resolvers, DNSSEC, ad blocking, WebRTC and connection fingerprints.
Connection
What every website you visit can see.
Checking your address…
DNS resolvers
Extended leak test: 36 unique lookups in six rounds show every server that answers for you.
Waiting for lookups…
Client subnet (ECS)
Whether your resolvers pass part of your IP address on to other servers.
Waiting for lookups…
DNSSEC validation
Your resolver should refuse names with broken signatures. Pass means it did.
Testing signatures…
Ad and tracker blocking
Your browser tries to reach known ad, tracking and telemetry hosts. A host counts as blocked when it cannot be reached.
Waiting to start…
WebRTC
WebRTC can reveal addresses that a VPN or proxy would otherwise hide.
Gathering candidates…
Connection fingerprint
How your device opens TCP, TLS and HTTP connections, read directly from the handshake.
Reading the handshake…