IP subnet calculator

20.61.15.208-20.61.75.255

20.61.15.208-20.61.15.223
20.61.15.208/28

20.61.15.224-20.61.15.255
20.61.15.224/27

20.61.16.0-20.61.31.255
20.61.16.0/20

20.61.32.0-20.61.63.255
20.61.32.0/19

20.61.64.0-20.61.71.255
20.61.64.0/21

20.61.72.0-20.61.75.255
20.61.72.0/22