IP Address, Functions, and IP Class

IP AddressIP Address (Internet Protocol address) is a row of 32-bit binary numbers up to 128 bits are used as identification address for each host computer in the Internet network. Figures 32 bits are used for IP Address IPv4 version and a 128-bit number used for IP Address IPv6 version to show the address of a computer on the Internet network based on TCP / IP.

The IP address has to be pronounced numerical identity to a device such as a computer, router or printer is contained in a computer network that uses the Internet protocol as a means of communication.


IP Address Functions

  1. IP Address is used as a means of identification of the host or network interface

    This function is illustrated as the person's name as a method to identify who the person is. In a computer network also applies the same thing that a unique IP Address will be used to identify a computer or device on a network.

  2. IP Address is used as a network location address

    This function is illustrated as our home address that indicates the location we are. To facilitate delivery of data packets, the IP address contains information of its existence. There is a route to be followed so that data can get to the destination computer.

IP Address Types

  1. IP version 4 (IPv4)

    Internet protocol version 4 or IPv4 consists of 32-bit and can accommodate more than 4,294,967,296 hosts worldwide. For example is, if hosts worldwide exceeded 4,294,967,296 then be made IPv6.

  2. IP version 6 (IPv6)

    IPv6 was created to address concerns about the ability IPv4 uses only 32 bits to accommodate the IP addresses in the world, the increasing number of network users from day to day Internet worldwide IPv4 assessed one day will reach the maximum limit that can ditampungnya, for that IPv6 version 128 bits are created. With his ability far greater than IPv4 assessed to be able to provide the IP Address on the entire internet network users around the world are increasingly more.

    Internet protocol version 6, or IPv6 consists of 128 bits. IP is 4 times that of IPv4, but the number of hosts that can be accommodated instead of 4 times but 4,294,967,296 4,294,967,296 rank of 4, so the results 340,282,366,920,938,463,463,374,607,431,768,211,456.

    Perbandingan IP Address versi 4 dan 6

Distribution of Class IP Address

IP address version 4 consists of four octaves, 1 octet value is 255. Since there are 4 octets, the number of IP addresses available is 255 x 255 x 255 x 255. IP Address as it should be distributed throughout the network of Internet users worldwide. To simplify the distribution process, the IP address should be grouped in classes.

IP addresses are grouped into five classes: class A, B, C, D, and E. The difference is in the size and number. IP Address class A networks. IP Address Class B is used for large and medium-sized networks. Class C IP addresses for network sharing that much, but each network has a slightly members. IP Address Class D and E are also defined, but not used in normal use, a class D multicast network is intended for, and E for Experimental.

The division of classes of IP addresses based on two things, namely the Network ID and Host ID of an IP Address Any IP Address is always a partner network ID (Identity Network) and Host ID (Identity hosts in a network). Each computer or router on a network host its ID must be unique and must be different from the other computer.

IP Address version 4 Class


  • Class A

    Format : 0nnnnnnn.hhhhhhhh.hhhhhhhh.hhhhhhhh (n = Net ID, h = Host ID)

    First Bit: 0

    Length Net ID: 8 bits (1 octet)

    Length Host ID: 24 bits (3 octets)

    The first octet: 0-127

    IP Address Range: 1.xxx.xxx.xxx.sampai 126.xxx.xxx.xxx (0 and 127 are reserved)

    Total Network: 126

    Total IP Address: 16,777,214

    A class IP network for a bit with the host very much. how to read a class A IP address example is the Network ID: 113, Host ID = 46.5.6

  • Class B

    Format : 10nnnnnn.nnnnnnnn.hhhhhhhh.hhhhhhhh (n = Net ID, h = Host ID)

    The first two bits: 10

    Length Net ID: 16 bits (2 octets)

    Length Host ID: 16 bits (2 octets)

    The first octet: 128-191

    IP Address Range: 128.0.0.xxx to 191.255.xxx.xxx

    Total Network: 16384

    Total IP Address: 65534

    Usually used for large and medium networks. The first two bits are always set to 10. The next 16 bits, a class B IP network can accommodate about 65,000 hosts.

  • Class C

    Format : 110nnnnn.nnnnnnnn.nnnnnnnn.hhhhhhhh (n = Net ID, h = Host ID)

    The first 3 bits: 110

    Length Net ID: 24 bits (3 octets)

    Length Host ID: 8 bits (1 octet)

    The first octet: 192-223

    IP Address Range: 192.0.0.xxx to 255.255.255.xxx

    Total Network: 2097152

    Total IP Address: 254

    The host ID is the last 8 bits, the IP class C, can be formed about 2 million networks, each of which has 256 IP Address The first three bits of the IP address class C always contains 111 with 21 bits the next. Host ID is the last 8 bits.

  • Kelas D

    Format : 1110mmmm.mmmmmmmm.mmmmmmmm.mmmmmmmm

    4 The first bit: 1110

    Multicast bits: 28 bits

    Byte Initials: 224-247

    Description: Class D is a multicast address space

    This class is used for multicasting. The first 4 bits of 1110, next bit is set as necessary multicast group that uses this IP Address. In unknown multicasting network bits and host bits.

  • Class E

    Format: 1111rrr.rrrrrrrr.rrrrrrrr.rrrrrrrr

    The first 4 bits: 1111

    Spare bits: 28 bits

    Byte initials: 248-255

    Description: Class E is the address space is reserved for experimental purposes.


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