Is There a Difference Between Class A, Class B, and Class C?

i spe would know only the range of dresses that is used in the university network. As a home user, i get an ip address from my i s p. And that might be a much larger block, because ip has tons at home users rigt. Those are tens of thousands, hundreds of thousands, or even millions o you provide te history of the concept of class fall and class less ip addresses.