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/27 subnet mask
A /27 block has 32 addresses with the netmask 255.255.255.224.
255.255.255.224| CIDR notation | /27 |
| Netmask | 255.255.255.224 |
| Wildcard mask | 0.0.0.31 |
| Total addresses | 32 |
| Usable hosts | 30 |
| Usable in an AWS subnet | 27 |
| Example range | 10.0.0.0/27: 10.0.0.0 to 10.0.0.31 |
How /27 fits with other sizes
- A /8 holds 524,288 subnets of /27.
- A /16 holds 2,048 subnets of /27.
- A /20 holds 128 subnets of /27.
- A /24 holds 8 subnets of /27.
- It splits into 2 subnets of /28.
- It splits into 4 subnets of /29.
- It splits into 16 subnets of /31.