Denys Beauchemin wrote:
>
> X-no-Archive:yes
> Never use addresses ending in 0, 1 or 255.
>
> .0 is used to describe the entire network.
> .1 is used as the router address between the network and the rest of >    the Internet
> .255 is the broadcast address.

And similarly, if you are subnetting, you can't use the first (zeroth)
or last subnet range.  Some routers will allow subnet zero, but as a
general rule, no.  If you subnet down to 255.255.255.224, for example,
giving ranges 0-31, 32-63, 64-95, 96-127, 128-159, 160-191, 192-223,
and 224-255; you cannot use 0-31 or 224-255.

Jeff Kell <[log in to unmask]>