Netstat shows the NETwork STATistics, so if your computer isn't connected to your dad's pc, it will not show that IP-address. It doesn't matter whether or not his computer is actually on-line. A better way to check for other computer available on the network is using a port scanner (e.g. Nmap
) or just PING them all. You need to create a bat script to do the latter however. Another way would be to access the router.
Note that you can use netstat to easily find which programs use which connections over the network and Internet, which is what it was designed for. It can also be used to check routing tables, network interfaces and network protocols used for the connections. Have fun!
Edit: Also, perfectly posted. My only comment; be more strict in punctuation if you can. And of course, welcome to HTS.