The term ‘IP or Internet Protocol’ refers to the Internet layer of the Internet Protocol Suite which performs the task of exchanging information between host and destination addresses. The fourth version of Internet Protocol, or IPv4, is the fourth version of IP creation. It is also the first version of the protocol to ever be installed widely.I strongly suggest you to visit How a Private IP Address Can Help Your Business – Expose Work to learn more about this.
In IPv4 address classes were generally divided into two parts at the beginning: the network identifier and the host identifier. When this was not found compatible, another address was redefined in such a way that the anomalies of the first method might be exceeded. Thus came into being the technique of building a collection of networks, commonly recognized as classy networking. This approach divides the address space for version 4 of Internet Protocol into five separate classes of addresses, class A, B , C , D and E. Each class defines either a network size or multicast networks. Class A, B , and C therefore have different bit lengths to identify a new network, Class D is allocated for multicast addressing and Class E is reserved for future purposes.
In the group of IPv4 address , the first class chosen that is Class A contains all the addresses in which the most significant bit is 0. For this, the nest seven bits give the network number accommodating a total of 128 networks including the zero network and the existing IP network already allocated. Addresses in the Class B network had the two most important bits 0 and 1. The next 14 bits of address were given the network address for this network thus leaving 16 bits for numbering host on the network for a total of 65536 addresses per network. The third class in the IPv4 address range, i.e. Class C was listed with 3 bits, 1, 1, and 0, leaving the next 21 bits per network to networks with 256 local addresses. The fourth group came in with the leading bit chain, 111 and was left to tackle multicast. The 1111 block, or Class E, was finally left for future experiments.
Although IPv4 network classes, the first architecture system expanded the Internet’s addressing capability, the IP address shortage was not preventable. The problem was that many sites wanted bigger address blocks than the one offered by a Class C network. They got Class B block as a result but this was much more than expected again. The unassigned portion of the Class B network was thus going in vain.
Later this IPv4 class scheme was replaced officially with Classless Inter-Domain Routing (CIDR). This program permitted the repartitioning of any address space so that the users could easily be allocated smaller as well as larger blocks of addresses.
The fourth Internet protocol version now uses 32-bit addresses, and can be interpreted in any notation representing a 32-bit integer value. It is written in dot-decimal notation for human understanding which contains four octets of the address expressed individually in decimals and separated by periods.