IP Addresses - Class Range

IP Address is a unique identification given to Host, network device, server for data communication.  Ip Address stand for Internet Protocol address, it is an addressing scheme used to identify a system on a network.

IP Version 4                        

IPV4 is a 32 bit number represented in 4 decimal numbers, where each decimal number is of 8 bit (an octet), where each octet is separated by a dot in between. Thus the representation is known as Dotted Decimal Notation. An IPV4 address is divided into 2 parts viz., Network ID and Host ID.

IP Version 6

IPV6 is of 128 bits represented in 8 combinations of 4 hexa decimal numbers each, separated by a colon. Hence IPV6 is called a 16-bit Hexadecimal Colon-delimited Block. In IPV4, we borrowed bits from Host ID - to increase the number of networks and to reduce the wastage of IP address. IPV4 is of 32 bits – (232) = 4.3 million IP addresses. 

IP Class Range

Class	Address Range	Supports
Class A	1.0.0.1 to 126.255.255.254	Supports 16 million hosts on each of 127 networks.
Class B	128.1.0.1 to 191.255.255.254	Supports 65,000 hosts on each of 16,000 networks.
Class C	192.0.1.1 to 223.255.254.254	Supports 254 hosts on each of 2 million networks.
Class D	224.0.0.0 to 239.255.255.255	Reserved for multicast groups.
Class E	240.0.0.0 to 254.255.255.254	Reserved for future use, or Research and Development Purposes.

APIPA – Automatic Private IP Address : 169.254.0.0 169.254.255.255