IP ADDRESSING

IP Addressing classes

we have two versions in ip addressing scheme.

• IPV4 (internet protocol version 4) - 32 bit
• IPV6 (internet protocol version 6) - 128 bit

Total ip addressing scheme is divided in to 5 classes.

• Class A
• Class B
• Class C
• Class D
• Class E

Here Class A B & C are for LAN & WAN use.

Class D for Multi casting

Class E for Research & Development.

Class Ranges

Class A - 0.0.0.0 to 127.255.255.255

Class B - 128.0.0.0 to 191.255.255.255

Class C - 192.0.0.0 to 223.255.255.255

Class D - 224.0.0.0 to 239.255.255.255

Class E - 240.0.0.0 to 255.255.255.0

Octet format

IP Address is divided in to Network & Host portions.

Class A              N .H .H .H

Class B              N .N .H .H

Class C              N .N .N .H

Private & Public IP Address

Class A 10.0.0.0 to 10.255.255.255

Class B 172.16.0.0 to 172.31.255.255

Class C 192.168.0.0 to  192.168.255.255

Apart from the above specified ip address all other IP addresses are public IP's

Confused...!! Don't worry download the IP Addressing document.