IP subnet calculator

87.156.12.0-87.156.33.3

87.156.33.0-87.156.33.3
87.156.33.0/30

87.156.12.0-87.156.15.255
87.156.12.0/22

87.156.16.0-87.156.31.255
87.156.16.0/20

87.156.32.0-87.156.32.255
87.156.32.0/24