RFC1918
| CIDR | Mask | Range |
| 10.0.0.0/8 | 255.0.0.0 | 10.0.0.0 → 10.255.255.255 |
| 172.16.0.0/12 | 255.240.0.0 | 172.16.0.0 → 172.31.255.255 |
| 192.168.0.0/16 | 255.255.0.0 | 192.168.0.0 → 192.168.255.255 |
Фактическое число адресов = полное число адресов - 2 (не учитываем адрес сети и широковещательный адрес)
| CIDR | Полное число адресов | Маска |
| /1 | 2147483648 | 128.0.0.0 |
| /2 | 1073741824 | 192.0.0.0 |
| /3 | 536870912 | 224.0.0.0 |
| /4 | 268435456 | 240.0.0.0 |
| /5 | 134217728 | 248.0.0.0 |
| /6 | 67108864 | 252.0.0.0 |
| /7 | 33554432 | 254.0.0.0 |
| /8 | 16777216 | 255.0.0.0 |
| /9 | 8388608 | 255.128.0.0 |
| /10 | 4194304 | 255.192.0.0 |
| /11 | 2097152 | 255.224.0.0 |
| /12 | 1048576 | 255.240.0.0 |
| /13 | 524288 | 255.248.0.0 |
| /14 | 262144 | 255.252.0.0 |
| /15 | 131072 | 255.254.0.0 |
| /16 | 65536 | 255.255.0.0 |
| /17 | 32768 | 255.255.128.0 |
| /18 | 16384 | 255.255.192.0 |
| /19 | 8192 | 255.255.224.0 |
| /20 | 4096 | 255.255.240.0 |
| /21 | 2048 | 255.255.248.0 |
| /22 | 1024 | 255.255.252.0 |
| /23 | 512 | 255.255.254.0 |
| /24 | 256 | 255.255.255.0 |
| /25 | 128 | 255.255.255.128 |
| /26 | 64 | 255.255.255.192 |
| /27 | 32 | 255.255.255.224 |
| /28 | 16 | 255.255.255.240 |
| /29 | 8 | 255.255.255.248 |
| /30 | 4 | 255.255.255.252 |
| /31 | 2 | 255.255.255.254 |
| /32 | 1 | 255.255.255.255 |
