Wrong Current Address Shown for Known Device

My android syncthing client keeps connecting to one of my devices from my android phone but displaying the wrong IP address of the device. Multiple Ip look-ups returned wrong country and ISP.

The device it connected to was an always-on server I have at home. However my home router has UNUP disabled and should not be port-forwarding the server. So I should not be able to connect to that device outside of the LAN. Although I am not at home so I will need to confirm that later.

Is the IP address a relay server, some malicious device or something else?

I have turned off syncthing on my android for now.

Relay server, because they couldn’t correct directly.

I can confirm this is correct. Home server showed as connected to the android.