Калькулятор IP подсетей

77.245.80.0-77.245.90.255

77.245.80.0-77.245.87.255
77.245.80.0/21

77.245.88.0-77.245.89.255
77.245.88.0/23

77.245.90.0-77.245.90.255
77.245.90.0/24