Subnet prefix length is just a fancy way to say "how big is my network." The number after the / is the mask—higher means smaller network.
/24 = small (home network)
/16 = big (corporate network)
You’d change it if you’re adding more devices or splitting networks. But unless you *need* to, don’t touch it.
And no, you won’t break everything if you mess up—just might lose connectivity for a bit.
For a visual, try [this tool](https://subnettingpractice.com/). It’s super helpful.
/24 = small (home network)
/16 = big (corporate network)
You’d change it if you’re adding more devices or splitting networks. But unless you *need* to, don’t touch it.
And no, you won’t break everything if you mess up—just might lose connectivity for a bit.
For a visual, try [this tool](https://subnettingpractice.com/). It’s super helpful.