This area is not for forum specific technical questions. Please post forum specific technical questions in the best forum, not in the lounge. However, if your idea or question is not covered...
To put it as simply as possible, in any given network range the very first address and the very last address are not usable for hosts. The first address is the network address, and the last...
That's almost certainly not correct, no. Your Internet provider is extremely unlikely to have the whole of 46./8 allocated to them. That'd be over sixteen million usable IPs, and a fairly...