CIDR Notation | Total Number of Addresses | Network Mask | Description |
/0 | 4,29,49,67,296 | 0.0.0.0 | All Addresses |
/1 | 2,14,74,83,684 | 128.0.0.0 | 128 /8 networks |
/2 | 1,07,37,41,824 | 192.0.0.0 | 64 /8 networks |
/3 | 53,68,70,912 | 224.0.0.0 | 32 /8 neworks |
/4 | 26,84,35,456 | 240.0.0.0 | 16 /8 networks |
/5 | 13,42,17,728 | 248.0.0.0 | 8 /8 networks |
/6 | 6,71,08,864 | 252.0.0.0 | 4 /8 networks |
/7 | 3,35,54,432 | 254.0.0.0 | 2 /8 networks |
/8 | 1,67,77,214 | 255.0.0.0 | 1 /8 network |
/9 | 83,88,608 | 255.128.0.0 | 128 /16 networks |
/10 | 41,94,304 | 255.192.0.0 | 64 /16 networks |
/11 | 20,97,152 | 255.224.0.0 | 32 /16 networks |
/12 | 10,48,576 | 255.240.0.0 | 16 /16 networks |
/13 | 5,24,288 | 255.248.0.0 | 8 /16 networks |
/14 | 2,62,144 | 255.252.0.0 | 4 /16 networks |
/15 | 1,31,072 | 255.254.0.0 | 2 /16 networks |
/16 | 65536 | 255.255.0.0 | 1 /16 network |
/17 | 32768 | 255.255.128.0 | 128 /24 networks |
/18 | 16384 | 255.255.192.0 | 64 /24 networks |
/19 | 8192 | 255.255.224.0 | 32 /24 networks |
/20 | 4096 | 255.255.240.0 | 16 /24 networks |
/21 | 2048 | 255.255.248.0 | 8 /24 networks |
/22 | 1024 | 255.255.252.0 | 4 /24 networks |
/23 | 512 | 255.255.254.0 | 2/24 networks |
/24 | 256 | 255.255.255.0 | 1 /24/network |
/25 | 128 | 255.255.255.128 | half of a /24 |
/26 | 64 | 255.255.255.192 | fourth of a /24 |
/27 | 32 | 255.255.255.224 | eighth of a /24 |
/28 | 16 | 255.255.255.240 | 1/16th of a /24 |
/29 | 8 | 255.255.255.248 | 6 usable addresses |
/30 | 4 | 255.255.255.252 | 2 usable addresses |
/31 | 2 | 255.255.255.254 | used in P2P links |
/32 | 1 | 255.255.255.255 | Single Host |