Калькулятор IP подсетей

81.31.147.0-81.31.159.255

81.31.147.0-81.31.147.255
81.31.147.0/24

81.31.148.0-81.31.151.255
81.31.148.0/22

81.31.152.0-81.31.159.255
81.31.152.0/21