子网掩码值

子网掩码值:

  1.掩码255.0.0.0:/8(A类地址默认掩码)

  2.掩码255.128.0.0:/9

  3.掩码255.192.0.0:/10

  4.掩码255.224.0.0:/11

  5.掩码255.240.0.0:/12

  6.掩码255.248.0.0:/13

  7.掩码255.252.0.0:/14

  8.掩码255.254.0.0:/15

  9.掩码255.255.0.0:/16(B类地址默认掩码)

  10.掩码255.255.128.0:/17

  11.掩码255.255.192.0:/18

  12.掩码255.255.224.0:/19

  13.掩码255.255.240.0:/20

  14.掩码255.255.248.0:/21

  15.掩码255.255.252.0:/22

  16.掩码255.255.254.0:/23

  17.掩码255.255.255.0:/24(C类地址默认掩码)

  18.掩码255.255.255.128:/25

  19.掩码255.255.255.192:/26

  20.掩码255.255.255.224:/27

  21.掩码255.255.255.240:/28

  22.掩码255.255.255.248:/29

  23.掩码255.255.255.252:/30

原文地址:https://www.cnblogs.com/HarveyBing/p/6015849.html