NAT Type and Packet Loss Test for PS5 and Xbox

The phone tests the router without UPnP: a browser can’t ask the router to open a port. The console can — through UPnP it opens a port for itself and gets a better type. That’s why the result shows two options: without UPnP and with it. If the console shows a worse type than the “with UPnP” line, UPnP is turned off on the router or the console sits behind a second router.

Rockstar hasn’t published the ports for GTA VI yet. For GTA Online in GTA V, Rockstar lists UDP 6672 and 61455–61458 — you can add them to the rules below. Most of the time you don’t need port forwarding at all: enabling UPnP on the router is enough.

CGNAT is when your ISP puts its customers behind a shared NAT, so your router has no address of its own on the internet. Then neither UPnP nor port forwarding will help: the door is already shut at the ISP. Check the WAN address from your router settings in the “Is your IP public?” section and ask your ISP for a public address — the request text writes itself.

The test measures the path from your network to our server. In-game lag can come from distant game servers, an overloaded session host or other players with poor connections. If your NAT is fine and the line is steady, the problem isn’t in your home. Also try the “with load” mode: latency that rises when someone is watching video causes lag too.

Usually the opposite: most VPNs put all their clients behind a strict NAT, and the console gets Type 3 or “Strict”. The test notices a VPN when the UDP check comes from a hosting or VPN provider’s address — then their NAT was measured, not your router. For an accurate result, turn off the VPN on your phone and on your router.

For NAT type, yes: the router decides it, and it’s the same router for cable and Wi-Fi. For loss and latency, no: Wi-Fi adds its own. To check the line the way the console sees it, run the test from a computer wired to the same router; run it from a phone next to the console to see what Wi-Fi adds.