Network Classes
0 – Gateway
Class A
1-126 CIDR /8
Private:10.0.0.0 – 10.255.255.255 /8
127 – loopback
Class B
128-191 CIDR /16
Private:172.16.0.0 – 172.31.255.255 /12
Class C
192-223 CIDR /24
Private:192.168.0.0 – 192.168.255.255 /16
Class D
224-239 CIDR /N/A
Class E
240-255 CIDR /N/A
Bit Values
128,64,32,16,8,4,2,1
IP Calc
