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IP subnet calculator
104.21.16.0-104.21.45.255

uk ru

104.21.16.0-104.21.31.255
104.21.16.0/20

104.21.32.0-104.21.39.255
104.21.32.0/21

104.21.40.0-104.21.43.255
104.21.40.0/22

104.21.44.0-104.21.45.255
104.21.44.0/23

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