These are:
Class A: 10.0.0.0
Class B: 172.16.0.0 – 172.31.0.0
Class C: 192.168.1.0
Each one of those have a subnet.
Class A: 255.0.0.0
Class B: 255.255.0.0
Class C: 255.255.255.0
These are:
Class A: 10.0.0.0
Class B: 172.16.0.0 – 172.31.0.0
Class C: 192.168.1.0
Each one of those have a subnet.
Class A: 255.0.0.0
Class B: 255.255.0.0
Class C: 255.255.255.0