PortLeak check
What a website can see from this device right now. Nothing is stored.
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IP address
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WebRTC
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Timezone
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Language
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i
DNS
A web page can't test this one. When you're connected, Portveil's tunnel files send DNS lookups through the tunnel, to Cloudflare (1.1.1.1) and Quad9 (9.9.9.9), so your internet provider doesn't see which sites you look up.
What this means
- IP address is what every site sees. On Portveil it's the exit's address in the US or Finland, not yours.
- WebRTC (used for video calls) can reveal a second address. If it shows one that isn't the exit, a site could find your real address even with a VPN on.
- Timezone and language come from your device, not your IP. A US timezone on a Finnish IP doesn't leak your address, but it tells sites you're probably using a VPN. For an AI agent's browser, set its timezone to match the exit (the Portveil API and MCP server give each exit's timezone).
For agents and scripts: GET https://portveil.com/cdn-cgi/trace shows the ip= a site sees; compare it with the exits at https://api.portveil.com/v1/exits.
Not on Portveil yet? Start free: 2 devices, no card.