/17 subnet
A /17 prefix equals subnet mask 255.255.128.0 and wildcard 0.0.127.255. It holds 32,768 addresses, 32,766 of them usable by hosts.
/17
- Subnet mask
- 255.255.128.0
- Wildcard mask
- 0.0.127.255
- Binary mask
- 11111111.11111111.10000000.00000000
- Total addresses
- 32,768
- Usable hosts
- 32,766
- Example network
- 10.0.0.0/17
- Example range
- 10.0.0.0 – 10.0.127.255
- How many fit
- 512 × /17 in a /8, 2 × /17 in a /16