Калькулятор IP подсетей 54.71.208.0-54.71.243.255
54.71.208.0-54.71.223.255
54.71.208.0/20
54.71.224.0-54.71.239.255
54.71.224.0/20
54.71.240.0-54.71.243.255
54.71.240.0/22
