Калькулятор IP подсетей 70.20.128.0-70.23.255.255
70.20.128.0-70.20.255.255
70.20.128.0/17
70.21.0.0-70.21.255.255
70.21.0.0/16
70.22.0.0-70.23.255.255
70.22.0.0/15
