Every Roku has its own IP address, which allows the device to join your home network. Here's how to find your Roku IP address ...
You can backup PS4 data onto an external drive, which is a great way to free up space. But you'll need to backup your ...
I dunno if it'll do the job you want, but WS Ping Pro (url is for a 30-day shareware) can scan a range of ip's you set, within a timeout you can vary. It won't return specific ping times for each ip, ...