What is a /26 subnet? 64 IPs for a team or floor

How this is calculated

The mask 255.255.255.192 leaves 6 host bits, which gives 64 addresses per block. A /24 splits into 4 blocks, with last-octet ranges of .0-.63, .64-.127, .128-.191, .192-.255. The second block runs from 192.168.1.64 to 192.168.1.127, and its usable range is 192.168.1.65 to 192.168.1.126. AWS and Azure both allow a /26 and both reserve five addresses per subnet, leaving 59 for resources. That's enough room for a small set of servers and a team's devices, but a big cluster would need a larger block. Growing past 62 devices means taking another block, so plan the split early. An access list that matches the block uses the wildcard 0.0.0.63, the mask with every bit flipped.

Verdict

A /26 is the step down when a /25 is more than a team needs. Its 62 usable addresses cover a team VLAN with desktops, printers and a few servers, as long as the device count holds steady. A summary route for the /24 covers all of its blocks in one entry, so the core router doesn't carry one route per team. Keep a lab on its own block, so a test device never shares a broadcast domain with production servers. In a cloud subnet, plan growth around the 59 addresses for resources, since the five reserved ones are never handed out. If the team later splits in two, this /26 holds 2 /27 blocks, one per half.