CGNAT Check

TP-Link

How to find the WAN IP on TP-Link routers

Find the internet-facing address on TP-Link routers so you can compare it with your public IP.

Open the checker

Step-by-step

Where to look in TP-Link routers

  1. 1.Log in to the TP-Link router interface or app.
  2. 2.Open the internet, status, or network overview screen.
  3. 3.Find the field labeled IP Address, Internet IP, or WAN IP.
  4. 4.Enter that number into the CGNAT checker.

If the menu labels differ on your model, use the full WAN-IP guide. Once you have the internet-facing IPv4, run the best-effort CGNAT check.

Device-specific check

Confirm which device owns the WAN connection

First identify whether this is a conventional TP-Link router, a Deco system, or a device in access-point mode. That operating mode determines whether the app or interface can expose a meaningful WAN value at all.

Notes

Before you compare the IP

  • Exact labels vary across TP-Link models, Deco systems, and firmware versions.
  • If the device runs in access point mode, it may not show the internet-facing WAN IP at all.

FAQ

TP-Link router questions

Why do I see a private IP on the TP-Link WAN page?

That usually means another device or your ISP is performing NAT upstream. The checker result and your network layout can help narrow it down.

Could the TP-Link app show a different value than the web interface?

Some apps simplify status information. If values differ, prefer the detailed router status page and confirm the connection mode.