Cloud Network Technology (Samoa) Limited device on my wifi?

It could be any number of devices that happen to be using a network chipset from Cloud Network Technology. CNT is a subsdiary of Foxconn, which is the company that manufactures a ton of devices that are sold here ranging from cheap little things to iPhones and PCs. Some possibilities I've identified from the internet are a smart TV possibly a Sony, an HP computer/laptop, an HP printer, or a Playstation. Multiple reports for the Sony smart TV and Playstation. It's possible some of the Playstations are using a network chipset that is coming up as Cloud Network Technology. Check the network settings on the PS4 and see if it'll show you the MAC address from it's network adapter.