DNS Security
DNS Leak Test
Check for DNS leaks to ensure your browsing history is secure and not visible to your ISP. No ads, no cookies, 100% private.
Your Public IPv4 Address
Your public IPv4 address (not IPv6)
Your Public IPv6 Address (Advanced)
Advanced Custom IP/Domain Scanner
Custom IP/Domain Scanner
IP Address
City
Country
ISP
Timezone
City
Country
ISP
Timezone
WebRTC Detection
Scanning for WebRTC connections...
DNS Servers
Detecting DNS configuration...
What this means
Analysis of your network configuration
Running analysis...
Detected Information
Data processing is 100% local - your privacy is protected
Understanding DNS Leaks
DNS leaks can expose your browsing history to your ISP even when you're using a VPN. Understanding how DNS works and how leaks occur is essential for maintaining your online privacy and ensuring your VPN is working correctly.
What is a DNS leak?
DNS (Domain Name System) translates website names into IP addresses. When you visit a website, your browser asks a DNS server to resolve the domain name. When using a VPN, ideally all your DNS requests should go through the VPN's encrypted tunnel. A DNS leak occurs when these requests escape the VPN tunnel and are visible to your ISP or other parties. How to check: Your detected DNS servers should ideally be different from your ISP's default servers. If they match your ISP, your browsing activity could be logged.
How to prevent DNS leaks
Use a reputable VPN: Quality VPN providers route all DNS requests through their own encrypted servers. Most paid VPNs include this by default. Manual DNS configuration: You can change your DNS servers to privacy-focused alternatives: Cloudflare: 1.1.1.1 and 1.0.0.1, Google: 8.8.8.8 and 8.8.4.4, Quad9: 9.9.9.9 (also blocks malicious domains). VPN + DNS-over-HTTPS: Enable DNS-over-HTTPS in your browser for additional privacy.
What is WebRTC?
WebRTC (Web Real-Time Communication) is a browser feature that enables direct peer-to-peer communication between browsers for video calls, audio chat, and file sharing - without requiring plugins. To establish these connections, WebRTC uses STUN servers to discover your public IP address and port information. This is how apps like Google Meet, Zoom, and Discord work directly in your browser. Note: Even when using a VPN, WebRTC can sometimes reveal your original IP address. This is known as a WebRTC leak.
How to prevent WebRTC leaks
Browser Extensions: Most privacy-focused browsers offer extensions that block WebRTC requests. Popular options include "WebRTC Leak Shield" or "uBlock Origin" with WebRTC blocking enabled. Browser Settings: Firefox: Enter about:config in the address bar, search for media.peerconnection.enabled and set it to false. Chrome: WebRTC cannot be fully disabled via settings, but extensions can help. Brave: Built-in WebRTC leak protection - should work automatically. VPN Settings: Some VPN apps include "WebRTC leak protection" - check your VPN provider's settings.
Do you log or store my IP address?
No. This tool is 100% ad-free with no tracking, no logging, and no signup required. Your IP address and network information are never sent to our servers, stored, or logged in any way. How it works: The tool makes API calls directly from your browser to third-party IP lookup services. We don't intercept, store, or log any of this data. Your privacy is completely protected.
Why is this DNS testing tool free with no ads?
As an established IT firm, our revenue comes from our professional services. Because this DNS leak test runs locally in your browser, we don't have overhead server costs to cover with intrusive ads or pop-ups.
Do you store the results of my DNS test?
Never. Unlike platforms where "you are the product," this tool is built for pure privacy and utility. We do not store your IP, log your DNS servers, or use cookies to track your visits.