IP subnet calculator

104.28.23.0-104.28.36.255

104.28.23.0-104.28.23.255
104.28.23.0/24

104.28.24.0-104.28.31.255
104.28.24.0/21

104.28.32.0-104.28.35.255
104.28.32.0/22

104.28.36.0-104.28.36.255
104.28.36.0/24