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IP subnet calculator
184.72.64.0-184.73.255.255

uk ru

184.72.64.0-184.72.127.255
184.72.64.0/18

184.72.128.0-184.72.255.255
184.72.128.0/17

184.73.0.0-184.73.255.255
184.73.0.0/16