IP Leak Test
With a proxy or VPN, public WebRTC candidates, DNS paths, and an uncovered second IP stack can reveal additional network information, but each test provides different and limited evidence.
The main check shows the exit and other stack; WebRTC and DNS run only from their separate controls. A different public ICE candidate or DNS-country mismatch is a possible clue. No public candidate, incomparable resolver, or matching result does not prove the setup is safe.