Subnet to Mask Bits conversion table
Mask CIDR Length (Mask Bits)
128.0.0.0 1
192.0.0.0 2
224.0.0.0 3
240.0.0.0 4
248.0.0.0 5
252.0.0.0 6
254.0.0.0 7
255.0.0.0 8
255.128.0.0 9
255.192.0.0 10
255.224.0.0 11
255.240.0.0 12
255.248.0.0 13
255.252.0.0 14
255.254.0.0 15
255.255.0.0 16
255.255.128.0 17
255.255.192.0 18
255.255.224.0 19
255.255.240.0 20
255.255.248.0 21
255.255.252.0 22
255.255.254.0 23
255.255.255.0 24
255.255.255.128 25
255.255.255.192 26
255.255.255.224 27
255.255.255.240 28
255.255.255.248 29
255.255.255.252 30
255.255.255.254 31
255.255.255.255 32