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IP subnet calculator

uk ru

142.250.186.0-142.250.187.255
142.250.186.0/23

142.250.188.0-142.250.191.255
142.250.188.0/22

142.250.192.0-142.250.255.255
142.250.192.0/18

142.251.0.0-142.251.255.255
142.251.0.0/16