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IP subnet calculator

uk ru

149.56.0.0-149.56.15.255
149.56.0.0/20

149.56.16.0-149.56.19.255
149.56.16.0/22

149.56.20.0-149.56.21.255
149.56.20.0/23

149.56.22.0-149.56.22.255
149.56.22.0/24