Калькулятор IP подсетей

165.91.0.0-165.91.12.255

165.91.0.0-165.91.7.255
165.91.0.0/21

165.91.8.0-165.91.11.255
165.91.8.0/22

165.91.12.0-165.91.12.255
165.91.12.0/24