| Prefix | Mask | Inverse mask | Hosts |
| 31 | 255.255.255.254 | 0.0.0.1 | - |
| 30 | 255.255.255.252 | 0.0.0.3 | 2 |
| 29 | 255.255.255.248 | 0.0.0.7 | 6 |
| 28 | 255.255.255.240 | 0.0.0.15 | 14 |
| 27 | 255.255.255.224 | 0.0.0.31 | 30 |
| 26 | 255.255.255.192 | 0.0.0.63 | 62 |
| 25 | 255.255.255.128 | 0.0.0.127 | 126 |
| 24 | 255.255.255.0 | 0.0.0.255 | 254 |
|
| Prefix | Mask | Inverse mask | Hosts |
| 23 | 255.255.254.0 | 0.0.1.255 | 510 |
| 22 | 255.255.252.0 | 0.0.3.255 | 1022 |
| 21 | 255.255.248.0 | 0.0.7.255 | 2046 |
| 20 | 255.255.240.0 | 0.0.15.255 | 4094 |
| 19 | 255.255.224.0 | 0.0.31.255 | 8190 |
| 18 | 255.255.192.0 | 0.0.63.255 | 16382 |
| 17 | 255.255.128.0 | 0.0.127.255 | 32766 |
| 16 | 255.255.0.0 | 0.0.255.255 | 65534 |
|
| Prefix | Mask | Inverse mask | Hosts |
| 15 | 255.254.0.0 | 0.1.255.255 | 131070 |
| 14 | 255.252.0.0 | 0.3.255.255 | 262142 |
| 13 | 255.248.0.0 | 0.7.255.255 | 524286 |
| 12 | 255.240.0.0 | 0.15.255.255 | 1048574 |
| 11 | 255.224.0.0 | 0.31.255.255 | 2097150 |
| 10 | 255.192.0.0 | 0.63.255.255 | 4194302 |
| 9 | 255.128.0.0 | 0.127.255.255 | 8388686 |
| 8 | 255.0.0.0 | 0.255.255.255 | 16777214 |
|