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CIDR Netmask Translation Table

Netmask Binary CIDR Notes
255.255.255.25511111111.11111111.11111111.11111111/32Single Host
255.255.255.25411111111.11111111.11111111.11111110/310 useable
255.255.255.25211111111.11111111.11111111.11111100/302 useable
255.255.255.24811111111.11111111.11111111.11111000/296 useable
255.255.255.24011111111.11111111.11111111.11110000/2814 useable
255.255.255.22411111111.11111111.11111111.11100000/2730 useable
255.255.255.19211111111.11111111.11111111.11000000/2662 useable
255.255.255.12811111111.11111111.11111111.10000000 /25126 useable
255.255.255.011111111.11111111.11111111.00000000/24Class C Network
255.255.254.011111111.11111111.11111110.00000000/23
255.255.252.011111111.11111111.11111100.00000000/22
255.255.248.011111111.11111111.11111000.00000000/21
255.255.240.011111111.11111111.11110000.00000000/20
255.255.224.011111111.11111111.11100000.00000000/19
255.255.192.011111111.11111111.11000000.00000000/18
255.255.128.011111111.11111111.10000000.00000000/17
255.255.0.011111111.11111111.00000000.00000000/16Class B Network
255.254.0.011111111.11111110.00000000.00000000/15
255.252.0.011111111.11111100.00000000.00000000/14
255.248.0.011111111.11111000.00000000.00000000/13
255.240.0.011111111.11110000.00000000.00000000/12
255.224.0.011111111.11100000.00000000.00000000/11
255.192.0.011111111.11000000.00000000.00000000/10
255.128.0.011111111.10000000.00000000.00000000/9
255.0.0.011111111.00000000.00000000.00000000/8Class A Network
254.0.0.011111110.00000000.00000000.00000000/7
252.0.0.011111100.00000000.00000000.00000000/6
248.0.0.011111000.00000000.00000000.00000000/5
240.0.0.011110000.00000000.00000000.00000000/4
224.0.0.011100000.00000000.00000000.00000000/3
192.0.0.011000000.00000000.00000000.00000000/2
128.0.0.010000000.00000000.00000000.00000000/1
0.0.0.000000000.00000000.00000000.00000000/0
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