NAT Detector
NAT Detector is a browser-based network utility designed to identify whether your internet connection is behind carri...
What NAT Detector does
NAT Detector is a browser-based network utility that identifies whether your internet connection is behind carrier-grade NAT. It determines your NAT type and reports IPv6 availability along with WebRTC/UDP connectivity status. The tool helps users understand their network configuration and spot potential connectivity issues that may affect gaming, peer-to-peer applications, or other services requiring direct internet access. It is designed to troubleshoot network connectivity problems on home networks, mobile connections, and gaming setups without requiring any sign-up or installation.
How to use the NAT Checker NAT Detector
- 1
Open the NAT Detector page on natchecker.com
- 2
Click the button to start the network test
- 3
Wait for the live progress bar to complete the 20-second timeout
- 4
View the detected NAT type and IPv6 availability results
- 5
Review the platform guides for your specific device if configuration changes are needed
Best for
Gamers and everyday users who want clear, reliable network diagnostics without setup or sign-up, especially those troubleshooting connectivity for PS5, Xbox, Switch, or PC.
Limitations
- Results are estimates based on real connection behavior
- No unit switching between IPv4 and IPv6 metrics
- Browser-based detection may vary with network conditions
NAT Detector FAQ
- What NAT types are detected and what do they mean for gaming?
- The tool classifies NAT types from Open (Type 1) to Strict (Type 3). Open types allow unrestricted connections, moderate types may limit some features, and strict types can block connections entirely, affecting multiplayer gaming and peer-to-peer performance.
- Does the tool check IPv6 connectivity?
- Yes, NAT Detector reports IPv6 availability alongside the IPv4 NAT type detection, providing a dual-stack view of your network configuration.
- How long does the NAT test take to complete?
- The test has a 20-second overall timeout with live progress, keeping the diagnostic quick while still gathering sufficient data for accurate classification.
- Is any account creation or payment required to use NAT Detector?
- No accounts or paywalls are required—the tool is free to use with no sign-up needed, and it works globally with globally reachable infrastructure.
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