Ip adress

Breakdown of IP Classes

A CIDR address includes the standard 32-bit IP address and also information on how many bits are used for the network prefix. For example, in the CIDR address 192.168.48/25, the "/25" indicates the first 25 bits are used to identify the unique network leaving the remaining bits to identify the specific host.

CIDR Prefix
Equivalent Class C
No of Host Addresses
/30 1/64 2
/29
1/32
6
/28
1/16
14
/27
1/8th
32
/26
1/4th
64
/25
1/2
128
/24
1
256
/23
2
512
/22
4
1,024
/21
8
2,048
/20
16
4,096
/19
32
8,192
/18
64
16,384
/17
128
32,768
/16
256
65,536