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IP subnet calculator
51.255.16.0-51.255.231.255

uk ru

51.255.16.0-51.255.31.255
51.255.16.0/20

51.255.32.0-51.255.63.255
51.255.32.0/19

51.255.64.0-51.255.127.255
51.255.64.0/18

51.255.128.0-51.255.191.255
51.255.128.0/18

51.255.192.0-51.255.223.255
51.255.192.0/19

51.255.224.0-51.255.231.255
51.255.224.0/21