CLASS OF ADDRESS

                                                 

                                                         Class of address

Class determine 1^st octate only, There are 5 class of address- Class-A,B,C,D,E.

Class-A its use for Public & Private IP address Distribution purpose.

Range is 1 to 126,

Subnet mask is 255.0.0.0,

Prefix is /8,  

Host per Subnet is 2^24.

Class-B its use for Public & Private IP address Distribution purpose.

Range is 128 to 191,

Subnet mask is 255.255.0.0,

Prefix is /16,  

Host per Subnet is 2^16.

Class-C its use for Public & Private IP address Distribution purpose.

Range is 192 to 223,

Subnet mask is 255.255.255.0,

Prefix is /8,  

Host per Subnet is 2^8.

Class-D its use Multicast purpose.

Range is 224 to 239,

Subnet mask –There is no subnet mask,

Prefix is /1 to /32,  

Class-E its use Research purpose.

Range is 240 to 255,

Subnet mask –There is no subnet mask,

Prefix is /1 to /32,  

Note- 127 range IP Address i.e 127.0.0.0 – 127.255.255.255 is Universal loopback address.

Private IP address range

10.0.0.0 – 10.255.255.255

172.16.0.0 – 172.31.255.255

192.168.0.0 – 192.168.255.255