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IP subnet calculator
129.227.128.0-129.227.142.255

uk ru

129.227.128.0-129.227.135.255
129.227.128.0/21

129.227.136.0-129.227.139.255
129.227.136.0/22

129.227.140.0-129.227.141.255
129.227.140.0/23

129.227.142.0-129.227.142.255
129.227.142.0/24