Калькулятор IP подсетей

81.91.178.144-81.91.178.154

81.91.178.144-81.91.178.151
81.91.178.144/29

81.91.178.152-81.91.178.153
81.91.178.152/31

81.91.178.154-81.91.178.154
81.91.178.154/32