/5 subnet
Mask 248.0.0.0 · 134,217,726 usable hosts · 134,217,728 addresses
| Subnet mask | 248.0.0.0 |
|---|---|
| Wildcard mask | 7.255.255.255 |
| Binary mask | 11111000.00000000.00000000.00000000 |
| Network / host bits | 5 / 27 |
| Total addresses | 134,217,728 |
| Usable hosts | 134,217,726 |
| Example | 192.168.10.77/5 → network 192.0.0.0, hosts 192.0.0.1 – 199.255.255.254, broadcast 199.255.255.255 |
Where /5 is used
A /5 is a less common size; it sits between /4 (268,435,456 addresses) and /6 (67,108,864 addresses).
Block boundaries: a /5 must start at a multiple of 134,217,728 addresses. Calculate any specific address in the subnet calculator.
Neighbouring prefixes
Questions
How many hosts in a /5?
134,217,728 addresses, of which 134,217,726 are usable (the first is the network address and the last is broadcast).
What is the subnet mask for /5?
248.0.0.0. In binary: 11111000.00000000.00000000.00000000. The wildcard (inverse) mask is 7.255.255.255.