An IP address is an identifier assigned to each computer and other device connected to a . Three classes (A, B, and C) were defined for universal unicast addressing. Depending on the class derived, the network identification was based on Mangler: rosinen blseenden. A classful network is a network addressing architecture used in the Internet from until the Classes A, B, C are networks of three different network sizes, i.e. number of hosts for unicast addresses. address space and the Internet Protocol (IP) packet structure, and avoid the renumbering of the existing networks. Mangler: rosinen blseenden. In the IPv4 address space certain address blocks are specially allocated or reserved for special It is often written in the same notation used to denote IP addresses. /24 and /24 are reserved in former class C. Mangler: rosinen blseenden.