Using a random non-default subnet increases security (slightly, and only through obscurity) by making it harder for a compromised device to perform automated attacks against, most often, your router. Typically they’re pretty simple scripts that just try to hit default ports on default IPs.
If it isn’t 192.168.1.0/24 then you should blur it. Mine is completely random and I keep it to myself.
Why?
Using a random non-default subnet increases security (slightly, and only through obscurity) by making it harder for a compromised device to perform automated attacks against, most often, your router. Typically they’re pretty simple scripts that just try to hit default ports on default IPs.