DNS Leak Test Tool

A DNS leak occurs when your DNS query requests bypass the VPN encrypted tunnel and are sent directly to your ISP's DNS servers, exposing your real IP address and browsing history. This seriously threatens your privacy and security.

Click the 'Start Test' button, and the tool will simultaneously send requests to multiple independent IP detection services and compare the returned IP addresses. The detection process typically completes within 5-10 seconds. If all detection sources return the same IP address, your DNS queries are not leaking; if inconsistent IP addresses appear, there may be a DNS leak. We recommend testing both before and after connecting to your VPN to verify the VPN's DNS protection effectiveness. If a leak is detected, please check your VPN's DNS settings or switch to a VPN service with DNS protection features.

DNS leaks are a serious privacy threat for VPN users. Even if your traffic is encrypted through a VPN, if DNS queries leak, your ISP and other monitors can still: 1. See all website domain names you visit; 2. Track your browsing habits and interests; 3. Record your online activity timeline; 4. Sell your browsing history to advertisers; 5. Provide your internet records to government agencies. DNS leaks completely undermine VPN privacy protection, exposing your online activities.

This tool queries your public IP address through multiple independent IP detection services simultaneously. If all detection sources return the same IP address, your DNS queries are not leaking. If different IP addresses are returned, there may be a DNS leak risk.

Methods to fix DNS leaks include: 1. Use a VPN service with built-in DNS protection, such as TongBao VPN which automatically routes all DNS requests through the encrypted tunnel; 2. Manually configure DNS servers to the DNS addresses provided by your VPN; 3. Disable IPv6 at the operating system level (some VPNs don't support IPv6, leading to IPv6 DNS leaks); 4. Use your VPN's 'DNS Leak Protection' or 'Kill Switch' features; 5. Regularly test with this tool to ensure DNS protection remains effective. TongBao VPN provides automatic DNS protection without manual configuration to completely prevent DNS leaks.

TongBao VPN employs advanced DNS protection technology to ensure all DNS queries go through the encrypted tunnel: 1. Proprietary DNS server network, independent of third-party DNS; 2. System-level DNS hijacking protection, forcing all DNS requests through VPN; 3. Complete IPv6 DNS support to prevent IPv6 leaks; 4. Automatic Kill Switch feature that immediately cuts network connection when VPN disconnects; 5. Real-time DNS leak monitoring with automatic fixes for anomalies. With TongBao VPN, you don't need to worry about DNS leaks—all privacy protection is automatic and reliable.