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IP subnet calculator
133.130.16.0-133.130.127.255

uk ru

133.130.16.0-133.130.31.255
133.130.16.0/20

133.130.32.0-133.130.63.255
133.130.32.0/19

133.130.64.0-133.130.127.255
133.130.64.0/18