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by ArchOversight 2071 days ago
Sure, there is no problem with using a .0. For example in 10.0.0.0/23 you'd have

10.0.1.0/32

As a perfectly valid IP address.

Also, routing an entire block allows you to use all of the IP's in said block. So there are ways to do it efficiently, but with routing a block that block is not considered on-network and thus doesn't have a broadcast address nor can it use one.