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IP subnet calculator

uk ru

37.187.40.0-37.187.47.255
37.187.40.0/21

37.187.48.0-37.187.63.255
37.187.48.0/20

37.187.64.0-37.187.127.255
37.187.64.0/18

37.187.128.0-37.187.191.255
37.187.128.0/18

37.187.192.0-37.187.195.255
37.187.192.0/22

37.187.196.0-37.187.197.255
37.187.196.0/23