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Premium DNS, WebRTC & IPv6 leak detector. Know instantly if your VPN is protecting you. Most VPN users assume they're protected. DNS Leak Test Shield tells you if they actually are. DNS leaks, WebRTC exposure, and IPv6 vulnerabilities silently bypass VPN tunnels every day — and most people never find out. Your VPN may show a green connected status while your real IP address and DNS activity are fully visible to your ISP, advertisers, and anyone monitoring your connection. DNS Shield runs a complete privacy leak scan in seconds and shows you exactly what the internet can see about you. ━━━ WHAT DNS SHIELD CHECKS ━━━ 🔍 DNS Leak Detection Queries multiple DNS resolvers via Cloudflare DoH and Google DoH to check whether your DNS requests are being handled by your VPN or silently routed through your ISP. An ISP-handled DNS server means your browsing activity is visible even with a VPN active. 🌐 WebRTC IP Leak Detection Chrome's built-in WebRTC API can expose your real IP address even when a VPN is connected. DNS Shield probes STUN servers to detect any IP addresses leaking outside your VPN tunnel — a vulnerability most VPN apps cannot prevent on their own. 🔢 IPv6 Leak Detection Many VPNs only tunnel IPv4 traffic, leaving IPv6 completely unprotected. DNS Shield detects whether IPv6 is active on your connection and flags it as a potential bypass risk. 📡 Public IP & ISP Identification See your current public IP address, country, ISP name, and ASN number so you know exactly what any website or server sees the moment you connect. ━━━ HOW IT WORKS ━━━ Click the DNS Shield icon in your Chrome toolbar Press Run Security Scan Get a complete privacy report in seconds No account required. No signup. No setup. ━━━ WHY IT IS DIFFERENT ━━━ ✅ DNS-over-HTTPS detection — uses both Cloudflare DoH and Google DoH for accurate resolver identification, not outdated methods ✅ ISP fingerprinting — automatically identifies whether each DNS server belongs to your VPN provider or your internet provider ✅ IP range classification — instantly recognizes Google Cloud, AWS, Azure, and Cloudflare infrastructure without slow API calls ✅ Color-coded results — green for protected, red for leak, amber for warning. No technical knowledge needed to read your results ✅ Zero data collection — your IP address and scan results never leave your browser. Nothing is stored, logged, or transmitted to us ✅ No background activity — the extension makes zero network requests unless you manually click Scan ━━━ UNDERSTANDING YOUR RESULTS ━━━ 🟢 VPN / Safe — Your DNS is handled by your VPN provider. Your connection is protected. 🔴 ISP Leak — DNS requests are routing through your Internet Service Provider. Your VPN is not working correctly and your browsing activity may be exposed. 🟡 Public DNS — You are using a public resolver such as Google or Cloudflare. Functional but not ideal for maximum privacy.