因为你这个是C类地址。6个子网的话。那么你就要借主机位3位也就是11100000才够花6个子网 2的3次幂是8 所以掩码:255.255.255.224所以每个子网的主机数是2的5次幂也就是32 1>
211.87.40.0 to 211.87.40.312>
211.87.40.32 to 211.87.40.633>
211.87.40.64 to 211.87.40.954>
211.87.40.96 to 211.87.40.1275>
211.87.40.128 to 211.87.40.1596>
211.87.40.160 to 211.87.40.1917>
211.87.4...