IP subnet calculator

86.57.128.0-86.57.240.255

86.57.128.0-86.57.191.255
86.57.128.0/18

86.57.192.0-86.57.223.255
86.57.192.0/19

86.57.224.0-86.57.239.255
86.57.224.0/20

86.57.240.0-86.57.240.255
86.57.240.0/24