The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Counting comes first because it is a recognition of what's in front of them. The count doesn't matter as long as it's just a bunch of stones that nobody wants. But when it's a pile of apples that everyone wants, the count is used to decide who gets what... assuming they want to be 'fair'. So names are given to different quantities, one two three four... note there is no zero. Because in counting things like apples, zero does not matter. Only quantities More than zero 'count'.

Arithmetic comes next to help decide how to divide things. Mathematics comes way later because math is not about Numbers and counting but about equations and symbolic methods.

And I saw all this in a movie or a video long ago. So counting is discovered and math is invented and arithmetic is in between the two. No, arithmetic is not Math because math is symbolic and arithmetic is the manipulation of numbers, not symbols.