| Subnet Mask |
CIDR Prefix |
Total IPs |
Usable IPs |
/24 Equivalent |
| 255.255.255.255 | /32 | 1 | 1 | 1/256th |
| 255.255.255.254 | /31 | 2 | 2* | 1/128th |
| 255.255.255.252 | /30 | 4 | 2 | 1/64th |
| 255.255.255.248 | /29 | 8 | 6 | 1/32nd |
| 255.255.255.240 | /28 | 16 | 14 | 1/16th |
| 255.255.255.224 | /27 | 32 | 30 | 1/8th |
| 255.255.255.192 | /26 | 64 | 62 | 1/4th |
| 255.255.255.128 | /25 | 128 | 126 | 1 half |
| 255.255.255.0 | /24 | 256 | 254 | 1 |
| 255.255.254.0 | /23 | 512 | 510 | 2 |
| 255.255.252.0 | /22 | 1024 | 1022 | 4 |
| 255.255.248.0 | /21 | 2048 | 2046 | 8 |
| 255.255.240.0 | /20 | 4096 | 4094 | 16 |
| 255.255.224.0 | /19 | 8192 | 8190 | 32 |
| 255.255.192.0 | /18 | 16384 | 16382 | 64 |
| 255.255.128.0 | /17 | 32768 | 32766 | 128 |
| 255.255.0.0 | /16 | 65536 | 65534 | 256 |
| 255.254.0.0 | /15 | 131072 | 131070 | 512 |
| 255.252.0.0 | /14 | 262144 | 262142 | 1024 |
| 255.248.0.0 | /13 | 524288 | 524286 | 2048 |
| 255.240.0.0 | /12 | 1048576 | 1048574 | 4096 |
| 255.224.0.0 | /11 | 2097152 | 2097150 | 8192 |
| 255.192.0.0 | /10 | 4194304 | 4194302 | 16384 |
| 255.128.0.0 | /9 | 8388608 | 8388606 | 32768 |
| 255.0.0.0 | /8 | 16777216 | 16777214 | 65536 |
| 254.0.0.0 | /7 | 33,554,432 | 33,554,430 | 131,072 |
| 252.0.0.0 | /6 | 67,108,864 | 67,108,862 | 262,144 |
| 248.0.0.0 | /5 | 134,217,728 | 134,217,726 | 1,048,576 |
| 240.0.0.0 | /4 | 268,435,456 | 268,435,454 | 2,097,152 |
| 224.0.0.0 | /3 | 536,870,912 | 536,870,910 | 4,194,304 |
| 192.0.0.0 | /2 | 1,073,741,824 | 1,073,741,822 | 8,388,608 |
| 128.0.0.0 | /1 | 2,147,483,648 | 2,147,483,646 | 16,777,216 |
| 0.0.0.0 | /0 | 4,294,967,296 | 4,294,967,294 | 33,554,432 |