How to define Internet Protecol (IP) subnet mask based on the IP address classes in Sepam device

IP addresses are classified on 4 classes:

Class A: IP@ 0.x.x.x to 127.x.x.x

Class B: IP@ 128.x.x.x to 191.x.x.x

Class C: 192.x.x.x to 239.x.x.x

Class D: 224.x.x.x to 239.x.x.x

Each IP address Class has a different default IP subnet mask:

Class A: 255.0.0.0

Class B: 255.255.0.0

Class C: 255.255.255.0

e.g. If your device IP address is Class C type (IP = 192.168.110.74), you can only use Class C type IP subnet mask. This means that you can use the following IP subnet masks: 255.255.255.0.

Refer the attached IP address classes for reference.