Калькулятор IP подсетей

119.81.0.0-119.81.136.255

119.81.0.0-119.81.127.255
119.81.0.0/17

119.81.128.0-119.81.135.255
119.81.128.0/21

119.81.136.0-119.81.136.255
119.81.136.0/24