About NAT Checker
Your trusted tool for understanding and optimizing network connectivity
Our Mission
NAT Checker was created to help gamers and network users understand their network configuration. We believe everyone should have access to free, easy-to-use tools for diagnosing and improving their online connectivity.
Why Choose NAT Checker?
Worldwide Accessibility
Available in 23 languages with servers around the globe for accurate detection.
Privacy First
We do not store your IP address or any personal information. All tests are anonymous.
Fast & Accurate
Using WebRTC technology for instant, reliable NAT type detection.
Free Forever
No registration required. No premium features. Completely free for everyone.
Our Technology
NAT Checker uses WebRTC (Web Real-Time Communication) technology combined with STUN servers to accurately detect your NAT type. This browser-based approach means no software installation is required.
We also check your IPv6 connectivity to help you understand your complete network configuration and future-proof your gaming setup.