Калькулятор IP подсетей 117.128.0.0-117.129.19.255
117.129.0.0-117.129.15.255
117.129.0.0/20
117.129.16.0-117.129.19.255
117.129.16.0/22
117.128.0.0-117.128.255.255
117.128.0.0/16
