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CIDR

Networking Basics: What is a subnet mask?

March 12, 2026December 17, 2023 by j2sw

In simple terms, a subnet mask is a 32-bit numeric address that delineates the network portion of an IP address from the host portion. It works in conjunction with IP addresses to divide a large network into smaller, more manageable segments called subnets. In this article, I will mainly focus on IPV4 subnets. A subnet … Read more

Categories Network Operations Tags basics, CIDR, networking, subnet, VSLM

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