Private vs Public IP Addressing

·Used with the LAN or withinthe organization

·Not recognized on internet

·Given by the administrator

·Unique within the network or organization


·Unregistered IP

·Used on public network ( INTERNET)

·Recognized on internet

·Given by the service provider ( from IANA)

·Globally unique

·Pay to service provider ( or IANA )


Private IP Address

There are certain addresses in each class of IP address that are reserved for Private Networks. These addresses are called private addresses.


Class A to

Class B to

Class C to

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