05/06/06 


IP Addressing

 

Each IP address contains 32 bits or 4 octets.

 

200.148.12.188 is an example of IP address.

 

The IP address is represented by four dot separated numbers (0 to 255).

 

Internet Address Standard (IPv4)


   
IP Address
Class A Begin
1
0
0
0
End
126
255
255
254
 
net
host
host
host
Mask
255
0
0
0
 
Class B Begin
128
0
0
0
End
191
255
255
254
 
net
net
host
host
Mask
255
255
0
0
 
Class C Begin
192
0
0
0
End
223
255
255
254
 
net
net
net
host
Mask
255
255
255
0

 

Series initiated by the number 127 are reserved for internal tests.

 

Class D: 224.0.0.0 to 239.255.255.255, dedicated to multicast.

 

Class E: other numbers reserved for future use.


IP addresses recommended to private internets

10.0.0.0 to 10.255.255.255

172.16.0.0 to 172.31.255.255

192.168.0.0 to 192.168.255.255

 

 

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