IP subnet calculator

31.177.64.0-31.177.93.255

31.177.64.0-31.177.79.255
31.177.64.0/20

31.177.80.0-31.177.87.255
31.177.80.0/21

31.177.88.0-31.177.91.255
31.177.88.0/22

31.177.92.0-31.177.93.255
31.177.92.0/23