Калькулятор IP подсетей

31.28.0.0-31.28.21.255

31.28.0.0-31.28.15.255
31.28.0.0/20

31.28.16.0-31.28.19.255
31.28.16.0/22

31.28.20.0-31.28.21.255
31.28.20.0/23