/11 subnet
Mask 255.224.0.0 · 2,097,150 usable hosts · 2,097,152 addresses
| Subnet mask | 255.224.0.0 |
|---|---|
| Wildcard mask | 0.31.255.255 |
| Binary mask | 11111111.11100000.00000000.00000000 |
| Network / host bits | 11 / 21 |
| Total addresses | 2,097,152 |
| Usable hosts | 2,097,150 |
| Per /8 · /16 · /24 | 8 · – · – |
| Example | 192.168.10.77/11 → network 192.160.0.0, hosts 192.160.0.1 – 192.191.255.254, broadcast 192.191.255.255 |
Where /11 is used
A /11 is a less common size; it sits between /10 (4,194,304 addresses) and /12 (1,048,576 addresses).
Block boundaries: a /11 must start at a multiple of 2,097,152 addresses. Calculate any specific address in the subnet calculator.
Neighbouring prefixes
Questions
How many hosts in a /11?
2,097,152 addresses, of which 2,097,150 are usable (the first is the network address and the last is broadcast).
What is the subnet mask for /11?
255.224.0.0. In binary: 11111111.11100000.00000000.00000000. The wildcard (inverse) mask is 0.31.255.255.