There are five (5) classes of IP
addresses.Types of IP Addresses
There are five (5) classes of IP
addresses.
Class A
0 |
7 Bit Network Address |
24 Bit Host Address |
Class B
| 1 | 0 | 14 Bit Network Address |
16 Bit Host Address |
Class C
| 1 | 1 | 0 | 21 Bit Network Address |
8 Bit Host Address |
Class D
| 1 | 1 | 1 | 0 | 28 Bit Multicast Address |
Class E
| 1 | 1 | 1 | 1 | 28 Bit Reserved Address |
Class A addresses use
7 bits for the network number giving 126 possible networks. The remaining 24 bits are used
for the host number, so each networks can have up to 224 x 2 = (16,777,214)
hosts.
Class B
addresses use 14 bits for the network number, and 16 bits for the host number giving 16382
networks each with a maximum of 65534 hosts.
Class C
addresses use 21 bits for the network number and 8 for the host number giving 2,097,150
networks each with up to 254 hosts.
Class D addresses are
reserved for multicasting, which is used to address groups of hosts in a limited area.
Class E addresses are
reserved for future use.
The host
number can be further subdivided. This division is controlled by the authority which owns
the network, and not by the InterNIC. This is called SUBNETTING.
Maintained by Mohan Atreya , Last update April 8, 1999 First created on November 10, 1998 |