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IP subnet calculator
221.150.66.0-221.150.74.255

uk ru

221.150.66.0-221.150.67.255
221.150.66.0/23

221.150.68.0-221.150.71.255
221.150.68.0/22

221.150.72.0-221.150.73.255
221.150.72.0/23

221.150.74.0-221.150.74.255
221.150.74.0/24