NAT Checker: A Clearer View of Network Reachability

# NAT Checker: A Clearer View of Network Reachability

Network Address Translation controls how private devices share public IP space and how inbound traffic reaches them. NAT Checker helps you inspect NAT behavior and understand connectivity for VPNs, games, and self-hosted services.

[Visit NAT Checker](https://natchecker.com/) to run a focused network diagnostic.

## Troubleshooting context

Review mapping and reachability results before changing router settings. This can distinguish local port restrictions from carrier-grade NAT.