/25 subnet
A /25 prefix equals subnet mask 255.255.255.128 and wildcard 0.0.0.127. It holds 128 addresses, 126 of them usable by hosts.
/25
- Subnet mask
- 255.255.255.128
- Wildcard mask
- 0.0.0.127
- Binary mask
- 11111111.11111111.11111111.10000000
- Total addresses
- 128
- Usable hosts
- 126
- Example network
- 10.0.0.0/25
- Example range
- 10.0.0.0 – 10.0.0.127
- How many fit
- 131,072 × /25 in a /8, 512 × /25 in a /16, 2 × /25 in a /24