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IP subnet calculator

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199.192.17.0-199.192.17.255
199.192.17.0/24

199.192.18.0-199.192.19.255
199.192.18.0/23

199.192.20.0-199.192.23.255
199.192.20.0/22

199.192.24.0-199.192.31.255
199.192.24.0/21