Close to that number, its for the company I work for, we are expanding very quickly, and we are getting to the point where printers/computers/cellphones/ect ect are getting close to maxing out the IP block, so were looking to fix that problem before it becomes a large one.
I'm referencing (B= 255.255.0.0) (C=255.255.255.0) this is the way I was taught, if its different now is there a place i can go to learn newer terminology?