+A subnet mask is a 32-bit number that separates an [IP Address](/wiki/ip_address) into its network and host components. It acts as a boundary, defining which part of the address belongs to the network and which to the specific device. This allows for the creation of distinct [Subnets](/wiki/subnet) within a larger network, improving organization and routing efficiency.
+## See also
+- [IP Address](/wiki/ip_address)
+- [Subnetting](/wiki/subnetting)
+- [Network](/wiki/network)
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