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The 5 reserved IPs in a subnet
AWS reserves 5 IPs in subnet 10.0.0.0/20: .0 network, .1 VPC router, .2 DNS, .3 future use, 10.0.15.255 broadcast.

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AWS reserves 5 IPs in subnet 10.0.0.0/20: .0 network, .1 VPC router, .2 DNS, .3 future use, 10.0.15.255 broadcast.