| CIDR | Máscara | Hosts útiles |
|---|---|---|
| /32 | 255.255.255.255 | 1 |
| /31 | 255.255.255.254 | Punto a punto |
| /30 | 255.255.255.252 | 2 |
| /29 | 255.255.255.248 | 6 |
| /28 | 255.255.255.240 | 14 |
| /27 | 255.255.255.224 | 30 |
| /26 | 255.255.255.192 | 62 |
| /25 | 255.255.255.128 | 126 |
| /24 | 255.255.255.0 | 254 |
| /23 | 255.255.254.0 | 510 |
| /22 | 255.255.252.0 | 1,022 |
| /21 | 255.255.248.0 | 2,046 |
| /20 | 255.255.240.0 | 4,094 |
| /19 | 255.255.224.0 | 8,190 |
| /18 | 255.255.192.0 | 16,382 |
| /17 | 255.255.128.0 | 32,766 |
| /16 | 255.255.0.0 | 65,534 |
| /15 | 255.254.0.0 | 131,070 |
| /14 | 255.252.0.0 | 262,142 |
| /13 | 255.248.0.0 | 524,286 |
| /12 | 255.240.0.0 | 1,048,574 |
| /11 | 255.224.0.0 | 2,097,150 |
| /10 | 255.192.0.0 | 4,194,302 |
| /9 | 255.128.0.0 | 8,388,606 |
| /8 | 255.0.0.0 | 16,777,214 |