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  • IPv4 private networks


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IPv4 addresses are limited. So we need to reuse them.

First three subnets are reserved for private networks.

Different companies can use the same private networks and different public IP addresses.


Private addresses

MaskNetworks / Clients

10.0.0.0 /8

-

10.255.255.255

Class A

255.0.0.0

1 network, 16.777.216 addresses

172.16.0.0 /16

-

172.31.255.255

Class B

255.255.0.0

16 networks, 65536 addresses

192.168.0.0 /24

-

192.168.255.255

Class C

255.255.255.0

256 networks, 256 adresses

169.254.0.0/16

-

169.254.255.255

Apipa/ Linklocal



127.0.0.0/8

-

127.255.255.255

Loopback



For public Subnets (Internet) see this complete list .



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