/2 Subnet
Subnet Mask
192.0.0.0
Wildcard Mask
63.255.255.255
Total IPs
1,073,741,824
Usable Hosts
1,073,741,822
Network Bits
2
Host Bits
30
About /2 Networks
Extremely large allocation, rarely used outside global routing. A /2 subnet uses the mask 192.0.0.0 and provides 1,073,741,822 usable host addresses out of 1,073,741,824 total IPs.
Example /2 Networks
| Network | Broadcast | First Host | Last Host |
|---|---|---|---|
| 0.0.0.0/2 | 63.255.255.255 | 0.0.0.1 | 63.255.255.254 |
| 128.0.0.0/2 | 191.255.255.255 | 128.0.0.1 | 191.255.255.254 |
| 192.0.0.0/2 | 255.255.255.255 | 192.0.0.1 | 255.255.255.254 |
| 192.0.0.0/2 | 255.255.255.255 | 192.0.0.1 | 255.255.255.254 |
| 0.0.0.0/2 | 63.255.255.255 | 0.0.0.1 | 63.255.255.254 |
Adjacent CIDRs
Frequently Asked Questions
What is a /2 subnet?
A /2 subnet uses the subnet mask 192.0.0.0 with 1,073,741,822 usable host addresses and 1,073,741,824 total IP addresses. It has 2 network bits and 30 host bits.
How many hosts in a /2 network?
A /2 network supports 1,073,741,822 usable hosts out of 1,073,741,824 total IP addresses. The usable range excludes the network address and broadcast address.
What subnet mask does /2 use?
A /2 subnet uses the mask 192.0.0.0 (wildcard mask 63.255.255.255). This means the first 2 bits identify the network and the remaining 30 bits identify hosts.