What is a /26 subnet?
62 usable hosts out of 64 addresses, behind netmask 255.255.255.192.
| Prefix | /26 |
|---|---|
| Netmask | 255.255.255.192 |
| Wildcard | 0.0.0.63 |
| Total addresses | 64 |
| Usable hosts | 62 |
| Example block | 10.0.0.0/26 |
| Usable host range | 10.0.0.1 – 10.0.0.62 |
| Broadcast | 10.0.0.63 |
A /26 fixes the first 26 bits of the address as the network and leaves 6 for hosts — 64 addresses in all.
Of those, 62 can be given to a machine: the first address names the network itself, and the last is the broadcast address.
These are the everyday sizes. A /24 is one office, one VLAN or one cloud subnet; the smaller ones suit a rack, a service tier or a DMZ.
4 of them fit inside a /24.
Other subnet sizes
Subnet CalculatorStart in seconds
Bring your whole infrastructure into one modern dashboard.
Free plan · No credit card required · Set up in minutes