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/13 subnet mask
A /13 block has 524,288 addresses with the netmask 255.248.0.0.
255.248.0.0| CIDR notation | /13 |
| Netmask | 255.248.0.0 |
| Wildcard mask | 0.7.255.255 |
| Total addresses | 524,288 |
| Usable hosts | 524,286 |
| Usable in an AWS subnet | n/a (AWS allows /16 to /28) |
| Example range | 10.0.0.0/13: 10.0.0.0 to 10.7.255.255 |
How /13 fits with other sizes
- A /8 holds 32 subnets of /13.
- It splits into 2 subnets of /14.
- It splits into 4 subnets of /15.
- It splits into 16 subnets of /17.