たまには丸暗記もいいっしょや

見たまんま。

  /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    2
  22    4
  23    8
  24    16
  25    32
  26   64
  27   128
  28   256
  29   512
  210   1024

 

 10.0.0.0 - 10.255.255.255    255.0.0.0   16,777,216 (16,777,216x1subnet)
 172.16.0.0 - 172.31.255.255    255.240.0.0   1,048,576 (65,536x16subnet)
 192.168.0.0 - 192.168.255.255    255.255.0.0   65,536 (256x256subnet)

でござんす。

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