I was looking through the devices tab on my pi hole adblocker today to check something and I saw this device wich showed as Chongqing Fugui Electronics Co.,Ltd. Ive looked it up and no info it sounds so dodgy so I thought to block it but I cant my router doesnt see it the app for my router doesnt see it nothing sees it but my adblocker so I cant block it but I want to as I want to see what it is and if its something nefarious. if anyone can help any info will be much appreciated.
Just a guess - do you have any smart home type devices? Wi-Fi controlled lights, switches etc? Or a smart TV or android box from Amazon connected to it? Or one of those cheaper “star light” things that maybe has some voice activation? Sounds similar to those types that phones home just because it can with the data that it gathers.
Nefarious? Unlikely. But still, something that is worth getting to the bottom of
Try nmap