OnceForAll
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 |
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