Калькулятор IP подсетей

149.248.0.0-149.248.21.255

149.248.0.0-149.248.15.255
149.248.0.0/20

149.248.16.0-149.248.19.255
149.248.16.0/22

149.248.20.0-149.248.21.255
149.248.20.0/23