Калькулятор IP подсетей

3.223.120.0-3.223.144.255

3.223.120.0-3.223.127.255
3.223.120.0/21

3.223.128.0-3.223.143.255
3.223.128.0/20

3.223.144.0-3.223.144.255
3.223.144.0/24