What Is IP Subnet?

IP subnet is a collection of IP-based hosts that share a common Network ID and therefore are considered to belong to the same subnet. Example: all computers that have IP addresses starting with 192.168.1 belong to the same subnet. Ultimately, the subnet mask is what truly determines which hosts are on the same subnet.

An IP subnet or subnet mask is a way to subdivide a network into smaller networks, so you can have a greater number of computers on a network with a single IP address. The IP subnet is a number that you append to the IP address. For example, 195.112.56.75/14, 195.112.56.75/15, and 195.112.56.75/16 are all IP addresses with subnets of 14, 15, and 16.

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