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IP subnet calculator

uk ru

99.83.102.0-99.83.103.255
99.83.102.0/23

99.83.104.0-99.83.111.255
99.83.104.0/21

99.83.112.0-99.83.127.255
99.83.112.0/20

99.83.128.0-99.83.255.255
99.83.128.0/17