The range is reserved for loopback. refers to the local machine. Traffic sent to loopback never leaves the host. means "this network" or "any address" depending on context. is the limited broadcast address. is link-local for when DHCP fails. Never assign these to devices.
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$ curl repovive.com/roadmaps/network-design/ip-addressing-and-subnetting/loopback-and-special-addresses
░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░███████████████████████████████████████████████████████████████████████████████████████████████████████