Ideally it'll get shorter, not longer. Something that can be printed on a cocktail napkin would be the most useful.
2) IP addresses are owned, like internet domains. However, back in the day, the powers that be decided they would reserve some IP addresses for private use. There are 4 such IP address blocks:- 10.x.x.x- 169.254.x.x- 172.16.x.x- 192.168.x.xAll other addresses are either reserved for special purposes, or owned by companies and used on the internet.
ss, you can set your IP address to an address in the same range (say 192.168.1.100) and ping 192.168.1.255. Then any device with an IP address that is 192.168.x.x will respond, allowing you to see the addresses of other devices on the network.Equally, if you have no idea what the address is, you can connect your computer to the same LAN, and give it any IP address and then ping the address 18.104.22.168 and any device on the LAN with any address will respond.
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