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172.21.20.11

B类 172.16.0.0--172.31.255.255 C类 192....11.掩码255.255.192.0:/18 12.掩码255.255.224...20.掩码255.255.255.224:/27 21.掩码255.255....

比如说一B类IP地址为172.16.0.0的网络划分成若干...0/23 IP范围是 129.25.10.1 到 129.25.11....0/23 IP范围是 129.25.20.1 到 129.25.21....

222.172.113.216:8088@HTTP$0.5#黑龙江省大庆市...121.20.21.141:8089@HTTP$0.6#河北省唐山市120...IP地址为:192.168.11.11; IP地址为:123.156.56...

然后,数数后面有几颗0,一共是有11颗,那就是2的...20> 178.016.19.1 TO 178.016.19.254 21> ...172> 178.016.171.1 TO 178.016.171.254 173>...

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