> For example, Class B address range is 128.1.0.0 ~ 191.254.0.0
>
> Why 128.0.0.0 and 191.255.0.0 can't use ?
>
> I can't understand it
This is because its the network and broadcast addresses of a Class A address
range. Simple answer :)
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This archive was generated by hypermail 2b29 : Thu Nov 30 2000 - 21:00:11 EST