■ What's This?
単なるIPアドレス数/サブネットマスク/ビットマスクの換算表です。
物覚えの悪いひと、計算が嫌いなひと向けの当社必携ツールです。
|
| IPアドレス数 | サブネットマスク | ビットマスク |
|---|
| 1 | 255.255.255.255 | 32 |
| 2 | 255.255.255.254 | 31 |
| 4 | 255.255.255.252 | 30 |
| 8 | 255.255.255.248 | 29 |
| 16 | 255.255.255.240 | 28 |
| 32 | 255.255.255.224 | 27 |
| 64 | 255.255.255.192 | 26 |
| 128 | 255.255.255.128 | 25 |
| 256 | 255.255.255.0 | 24 |
| 512 | 255.255.254.0 | 23 |
| 1,024 | 255.255.252.0 | 22 |
| 2,048 | 255.255.248.0 | 21 |
| 4,096 | 255.255.240.0 | 20 |
| 8,192 | 255.255.224.0 | 19 |
| 16,384 | 255.255.192.0 | 18 |
| 32,768 | 255.255.128.0 | 17 |
| 65,536 | 255.255.0.0 | 16 |
| 131,072 | 255.254.0.0 | 15 |
| 262,144 | 255.252.0.0 | 14 |
| 524,288 | 255.248.0.0 | 13 |
| 1,048,576 | 255.240.0.0 | 12 |
| 2,097,152 | 255.224.0.0 | 11 |
| 4,194,304 | 255.192.0.0 | 10 |
| 8,388,608 | 255.128.0.0 | 9 |
| 16,777,216 | 255.0.0.0 | 8 |
| 33,554,432 | 254.0.0.0 | 7 |
| 67,108,864 | 252.0.0.0 | 6 |
| 134,217,728 | 248.0.0.0 | 5 |
| 268,435,456 | 240.0.0.0 | 4 |
| 536,870,912 | 224.0.0.0 | 3 |
| 1,073,741,824 | 192.0.0.0 | 2 |
| 2,147,483,648 | 128.0.0.0 | 1 |
| 4,294,967,296 | 0.0.0.0 | 0 |
|
