/11 Subnet
Subnet Mask
255.224.0.0
Wildcard Mask
0.31.255.255
Total IPs
2,097,152
Usable Hosts
2,097,150
Network Bits
11
Host Bits
21
About /11 Networks
Large ISP or enterprise allocation. A /11 subnet uses the mask 255.224.0.0 and provides 2,097,150 usable host addresses out of 2,097,152 total IPs.
Example /11 Networks
| Network | Broadcast | First Host | Last Host |
|---|---|---|---|
| 10.0.0.0/11 | 10.31.255.255 | 10.0.0.1 | 10.31.255.254 |
| 172.0.0.0/11 | 172.31.255.255 | 172.0.0.1 | 172.31.255.254 |
| 192.160.0.0/11 | 192.191.255.255 | 192.160.0.1 | 192.191.255.254 |
| 192.160.0.0/11 | 192.191.255.255 | 192.160.0.1 | 192.191.255.254 |
| 8.0.0.0/11 | 8.31.255.255 | 8.0.0.1 | 8.31.255.254 |
Adjacent CIDRs
Frequently Asked Questions
What is a /11 subnet?
A /11 subnet uses the subnet mask 255.224.0.0 with 2,097,150 usable host addresses and 2,097,152 total IP addresses. It has 11 network bits and 21 host bits.
How many hosts in a /11 network?
A /11 network supports 2,097,150 usable hosts out of 2,097,152 total IP addresses. The usable range excludes the network address and broadcast address.
What subnet mask does /11 use?
A /11 subnet uses the mask 255.224.0.0 (wildcard mask 0.31.255.255). This means the first 11 bits identify the network and the remaining 21 bits identify hosts.