DNS Leak Test
Check if your DNS queries are leaking outside your VPN tunnel, potentially exposing your browsing activity to your ISP.
DNS Leak Test
What is a DNS Leak?
A DNS leak occurs when your DNS queries are sent outside your VPN tunnel, revealing the websites you visit to your ISP. Even with a VPN, if your DNS leaks, your browsing activity can be tracked.
Why DNS Leaks Matter
Even if you use a VPN to encrypt your traffic, DNS leaks can expose your browsing history to your ISP. Every website you visit requires a DNS lookup, and if those queries go to your ISP's servers instead of your VPN's servers, your online activity is being logged.
This undermines the privacy benefits of using a VPN and can reveal your interests, habits, and sensitive information to third parties.
How to Prevent DNS Leaks
- Use a VPN with built-in DNS leak protection
- Configure DNS-over-HTTPS (DoH) in your browser
- Use secure DNS providers like Cloudflare (1.1.1.1) or Quad9 (9.9.9.9)
- Disable IPv6 if your VPN doesn't support it
- Check your VPN's kill switch settings
Frequently Asked Questions
What is a DNS leak?
A DNS leak occurs when your DNS queries are sent outside your VPN tunnel to your ISP's DNS servers instead of your VPN provider's servers. This reveals the websites you visit to your ISP, even when using a VPN.
How do I fix a DNS leak?
To fix DNS leaks: 1) Use a VPN with built-in DNS leak protection, 2) Manually configure your device to use secure DNS servers like 1.1.1.1 or 9.9.9.9, 3) Disable WebRTC in your browser, 4) Use DNS-over-HTTPS (DoH) or DNS-over-TLS (DoT).
Does my VPN protect against DNS leaks?
Not all VPNs protect against DNS leaks by default. Premium VPNs usually include DNS leak protection, but you should verify this in your VPN settings and test regularly using this tool.
What DNS servers should I see if my VPN is working?
If your VPN is working correctly, you should see DNS servers owned by your VPN provider, not your ISP. The DNS server IPs should be different from your regular connection.