子网掩码对照表
时间：2005-12-01 来源：lues
24 255.255.255.0
23 255.255.254.0
22 255.255.252.0
21 255.255.248.0
20 255.255.240.0
19 255.255.224.0
18 255.255.192.0
17 255.255.128.0
16 255.255.0.0
15 255.254.0.0
14 255.252.0.0
13 255.248.0.0
12 255.240.0.0
11 255.224.0.0
10 255.192.0.0
9 255.128.0.0
8 255.0.0.0
23 255.255.254.0
22 255.255.252.0
21 255.255.248.0
20 255.255.240.0
19 255.255.224.0
18 255.255.192.0
17 255.255.128.0
16 255.255.0.0
15 255.254.0.0
14 255.252.0.0
13 255.248.0.0
12 255.240.0.0
11 255.224.0.0
10 255.192.0.0
9 255.128.0.0
8 255.0.0.0
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