You can use nmap to quickly, easily and stealthily generate a listing of all systems on a particular subnet. And the process can be even simpler than building your own "ping everybody on this ...

Network technicians also use Nmap to troubleshoot and document their network. The tool produces information such as host names, available ports and active IP addresses.

My amazon fire hd 8 is actually a later version of fire os and it was post abandonment of cyanogen by amazon in 2015 but i am inclined to think nmap is identifying it wrongbut nmap and fingbox ...

In a post to the "Nmap Announce" mailing list, developer Gordon Lyon announced the release of Nmap 7.80 while attending the DEF CON security conference.