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IP subnet calculator

uk ru

172.217.4.0-172.217.7.255
172.217.4.0/22

172.217.8.0-172.217.15.255
172.217.8.0/21

172.217.16.0-172.217.31.255
172.217.16.0/20

172.217.32.0-172.217.33.255
172.217.32.0/23