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IP subnet calculator

uk ru

3.218.184.0-3.218.191.255
3.218.184.0/21

3.218.192.0-3.218.255.255
3.218.192.0/18

3.219.0.0-3.219.255.255
3.219.0.0/16

3.220.0.0-3.223.255.255
3.220.0.0/14