| Subnet Mask | CIDR | Binary Notation | Network Bits | Host Bits | Available Addresses |
|---|---|---|---|---|---|
| 255.255.255.255 | /32 | 11111111.11111111.11111111.11111111 | 32 | 0 | 1 |
| 255.255.255.254 | /31 | 11111111.11111111.11111111.11111110 | 31 | 1 | 2 |
| 255.255.255.252 | /30 | 11111111.11111111.11111111.11111100 | 30 | 2 | 4 |
| 255.255.255.248 | /29 | 11111111.11111111.11111111.11111000 | 29 | 3 | 8 |
| 255.255.255.240 | /28 | 11111111.11111111.11111111.11110000 | 28 | 4 | 16 |
| 255.255.255.224 | /27 | 11111111.11111111.11111111.11100000 | 27 | 5 | 32 |
| 255.255.255.192 | /26 | 11111111.11111111.11111111.11000000 | 26 | 6 | 64 |
| 255.255.255.128 | /25 | 11111111.11111111.11111111.10000000 | 25 | 7 | 128 |
| 255.255.255.0 | /24 | 11111111.11111111.11111111.00000000 | 24 | 8 | 256 |
| 255.255.254.0 | /23 | 11111111.11111111.11111110.00000000 | 23 | 9 | 512 |
| 255.255.252.0 | /22 | 11111111.11111111.11111100.00000000 | 22 | 10 | 1024 |
| 255.255.248.0 | /21 | 11111111.11111111.11111000.00000000 | 21 | 11 | 2048 |
| 255.255.240.0 | /20 | 11111111.11111111.11110000.00000000 | 20 | 12 | 4096 |
| 255.255.224.0 | /19 | 11111111.11111111.11100000.00000000 | 19 | 13 | 8192 |
| 255.255.192.0 | /18 | 11111111.11111111.11000000.00000000 | 18 | 14 | 16384 |
| 255.255.128.0 | /17 | 11111111.11111111.10000000.00000000 | 17 | 15 | 32768 |
| 255.255.0.0 | /16 | 11111111.11111111.00000000.00000000 | 16 | 16 | 65536 |
| 255.254.0.0 | /15 | 11111111.11111110.00000000.00000000 | 15 | 17 | 131072 |
| 255.252.0.0 | /14 | 11111111.11111100.00000000.00000000 | 14 | 18 | 262144 |
| 255.248.0.0 | /13 | 11111111.11111000.00000000.00000000 | 13 | 19 | 524288 |
| 255.240.0.0 | /12 | 11111111.11110000.00000000.00000000 | 12 | 20 | 1048576 |
| 255.224.0.0 | /11 | 11111111.11100000.00000000.00000000 | 11 | 21 | 2097152 |
| 255.192.0.0 | /10 | 11111111.11000000.00000000.00000000 | 10 | 22 | 4194304 |
| 255.128.0.0 | /9 | 11111111.10000000.00000000.00000000 | 9 | 23 | 8388608 |
| 255.0.0.0 | /8 | 11111111.00000000.00000000.00000000 | 8 | 24 | 16777216 |
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