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
