Test your connection for DNS leaks while using a VPN or proxy. Identify DNS resolvers, compare them with your expected VPN path, and check for unexpected DNS exposure.
Configure query depth and expected network path
All observed DNS queries were handled by a single consistent DNS resolver network.
| Resolver IP | Provider / ASN | Country | Queries |
|---|---|---|---|
| No DNS resolver probes executed yet. Click "START DNS LEAK TEST". | |||
Chart will generate automatically after probe completion.
No previous session logs stored locally.
EasyToolio provides three distinct, complementary browser diagnostic tools to inspect every layer of your connection identity.
Focus: Browser P2P IP Exposure
Evaluates whether W3C RTCPeerConnection and STUN candidate binding requests bypass your VPN to leak ISP-assigned public or private IPs.
Focus: Visible Connection Identity
Synthesizes HTTP public IP, dual-stack IPv4/IPv6 exposure, and expected VPN exit gateway consistency into a unified privacy verdict.
Focus: Recursive Resolver Exposure
Tracks which recursive DNS servers process your domain lookups using authoritative single-use subdomain probes.
A DNS leak happens when internet domain requests bypass your VPN tunnel and are sent directly to your ISP or third-party recursive DNS servers.
Recursive resolvers look up IP addresses for domain names on your behalf, while authoritative servers maintain the official domain records.
DoH and DoT encrypt DNS queries between your browser/system and DNS provider, guarding against local Wi-Fi eavesdropping and ISP hijacking.
By generating unique single-use subdomains, our diagnostic server inspects which recursive resolver IP address actually fetches the DNS record.
Quick answers about how this tool works.
Plain-language explainers that sit next to this tool.
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