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CIDR stands for Classless Inter-Domain Routing and writes the subnet size as a slash prefix.

What is the most common LAN CIDR?

A /24 is common for small LANs because it provides 254 usable IPv4 host addresses.

CIDR Chart for Network Engineers | Reload in 5

CIDR chart for IPv4 prefix lengths, subnet masks, usable host counts, and common network design use cases.

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