Table 5. Default Netmasks, etc.
Class
Default
Meaning of
Sample
Sample
Net-Mask
IP (Host)
Host
Network
Address
Address
Address
A
255.0.0.0
N.H.H.H
10.0.1.23
10.0.0.0
B
255.255.0.0
N.N.H.H
146.87.12.250
146.87.0.0
C
255.255.255.0
N.N.N.H
200.150.189.31
200.150.189.0