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IP subnet calculator
138.68.3.0-138.68.31.255

uk ru

138.68.3.0-138.68.3.255
138.68.3.0/24

138.68.4.0-138.68.7.255
138.68.4.0/22

138.68.8.0-138.68.15.255
138.68.8.0/21

138.68.16.0-138.68.31.255
138.68.16.0/20