255.0.0.0/8

255.128.0./9

255.192.0./10

255.224.0./11

255.240.0./12

255.248.0./13

255.252.0./14

255.254.0./15

255.255.0./16

255.255.128/17

255.255.192/18

255.255.224/19

255.255.240/20

255.255.248/21

255.255.252/22

255.255.254/23

255.255.255/24

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

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