Калькулятор IP подсетей 20.52.88.0-20.52.255.255
20.52.88.0-20.52.95.255
20.52.88.0/21
20.52.96.0-20.52.127.255
20.52.96.0/19
20.52.128.0-20.52.255.255
20.52.128.0/17
