|
| CIDR |
サブネットの書き方 |
IPアドレス個数 |
| /32 |
255.255.255.255 |
1 |
| /31 |
255.255.255.254 |
2 |
| /30 |
255.255.255.252 |
4 |
| /29 |
255.255.255.248 |
8 |
| /28 |
255.255.255.240 |
16 |
| /27 |
255.255.255.224 |
32 |
| /26 |
255.255.255.192 |
64 |
| /25 |
255.255.255.128 |
128 |
| /24 |
255.255.255.0 |
256 |
| /23 |
255.255.254.0 |
512 |
| /22 |
255.255.252.0 |
1024 |
| /21 |
255.255.248.0 |
2048 |
| /20 |
255.255.240.0 |
4096 |
| /19 |
255.255.224.0 |
8192 |
| /18 |
255.255.192.0 |
16384 |
| /17 |
255.255.128.0 |
32768 |
| /16 |
255.255.0.0 |
65536 |
| /15 |
255.254.0.0 |
131072 |
| /14 |
255.252.0.0 |
262144 |
| /13 |
255.248.0.0 |
524288 |
| /12 |
255.240.0.0 |
1048576 |
| /11 |
255.224.0.0 |
2097152 |
| /10 |
255.192.0.0 |
省略 |
| /9 |
255.128.0.0 |
省略 |
| /8 |
255.0.0.0 |
省略 |
| /7 |
254.0.0.0 |
省略 |
| /6 |
252.0.0.0 |
省略 |
| /5 |
248.0.0.0 |
省略 |
| /4 |
240.0.0.0 |
省略 |
| /3 |
224.0.0.0 |
省略 |
| /2 |
192.0.0.0 |
省略 |
| /1 |
128.0.0.0 |
省略 |
|
|
