Learn how to change the Subnet Mask in Windows 11/10 using Settings, Control Panel, PowerShell and your browser. Subnet Mask divides IP address into two segments.

Different subnet masks in general. Company A may be pretty straightforward and have subnet masks of 255.255.255.0.

I have a networking situation where some tools can or can't communicate between two devices on the same LAN but differing subnet masks (it's an error, will be corrected). The question is why do ...