Калькулятор IP подсетей

142.250.239.240-142.251.31.255

142.250.239.240-142.250.239.255
142.250.239.240/28

142.250.240.0-142.250.255.255
142.250.240.0/20

142.251.0.0-142.251.31.255
142.251.0.0/19