.

.
 AddressesNetmaskAmount of a Class C
/31 2 255.255.255.254 1/128
/30 4 255.255.255.252 1/64
/29 8 255.255.255.248 1/32
/28 16 255.255.255.240 1/16
/27 32 255.255.255.224 1/8
/26 64 255.255.255.192 1/4
/25 128 255.255.255.128 1/2
/24 256 255.255.255.0 1
/23 512 255.255.254.0 2
/22 1024 255.255.252.0 4
/21 2048 255.255.248.0 8
/20 4096 255.255.240.0 16
/19 8192 255.255.224.0 32
/18 16384 255.255.192.0 64
/17 32768 255.255.128.0 128
/16 65536 255.255.0.0 256
/15 131072 255.254.0.0 512
/14 262144 255.252.0.0 1024
/13 524288 255.248.0.0 2048
/12 1048576 255.240.0.0 4096
/11 2097152 255.224.0.0 8192
/10 4194304 255.192.0.0 16384
/9 8388608 255.128.0.0 32768
/8 16777216 255.0.0.0 65536

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