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IP subnet calculator
104.16.0.0-104.28.7.255

uk ru

104.28.0.0-104.28.7.255
104.28.0.0/21

104.16.0.0-104.23.255.255
104.16.0.0/13

104.24.0.0-104.27.255.255
104.24.0.0/14