Classification ipv4 address

" Ipv4 address classification is divided into five categories, namely class A address, the address class B, class C address, Class D and Class E address address, class A is reserved for government agencies, Class B assigned to medium-sized companies, Class C assigned to anyone in need, for multicast class D, E class used in the experiment, the number of addresses that can accommodate all types are different. in addition, ipv4 address five categories in terms of features also are very different such as A, B, C to three IP "