> 1. The relevant standard states that all IP addresses are
> classified as one of classes A, B, C or D depending only
> on the FIRST octet/byte thereof, as follows:
>
> 0 Reserved
> 1-127 Class A 8 bit
> 128-191 Class B 16 bit
> 192-223 Class C 24 bit
> 224-254 Class D
> 255 Reserved
Not anymore. You can no longer determine the number of bits in the network
versus host part of an IP address just by looking at the first octet. That's
the piece of information missing.
DS
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