Калькулятор IP подсетей

51.138.0.0-51.138.21.255

51.138.0.0-51.138.15.255
51.138.0.0/20

51.138.16.0-51.138.19.255
51.138.16.0/22

51.138.20.0-51.138.21.255
51.138.20.0/23