A DNS leak can expose the websites your device asks to reach, even while a VPN is connected. CryptSurf keeps the setup simple: connect to VPN, use protected DNS settings, and check that browsing requests stay inside the encrypted tunnel.
Start the check inside CryptSurf. The browser loads a unique test host and this page reads the DNS result from the CryptSurf collector when it is configured.
The test runs on this page. No third-party DNS test page is opened.
Click the button above to create a private test session and check DNS behavior.
DNS leak tests can vary by browser and network. For the clearest result, close other VPN or proxy apps before testing.
DNS is the lookup system your device uses before opening a website. If those lookups go to your internet provider instead of the VPN tunnel, your browsing destinations may become visible.
Your device asks a resolver where a domain is located before loading it. Without protection, this resolver may belong to your ISP, mobile carrier, or local network.
A leak happens when DNS requests bypass the VPN route. Your traffic may still be encrypted, but the domain lookups can reveal browsing intent.
CryptSurf is designed to route privacy-sensitive traffic through the VPN connection and keep DNS behavior aligned with the selected VPN location.
Use these steps whenever you connect from a new network, public Wi-Fi, hotel network, or mobile hotspot.
Create an anonymous account number, connect securely, and manage DNS behavior from the CryptSurf app.
