Private IPv4 addresses

Private IPv4 addresses



The private address space specified in RFC 1918 is defined by the following three address blocks:

Range Number Network
10.0.0.0 – 10.255.255.255 16,777,216 10.0.0.0/8 (255.0.0.0) 24 bits
172.16.0.0 – 172.31.255.255 1,048,576 172.16.0.0/12 (255.240.0.0) 20 bits
192.168.0.0 – 192.168.255.255 65,536 192.168.0.0/16 (255.255.0.0) 16 bits

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