/0 subnet
Mask 0.0.0.0 · 4,294,967,294 usable hosts · 4,294,967,296 addresses
| Subnet mask | 0.0.0.0 |
|---|---|
| Wildcard mask | 255.255.255.255 |
| Binary mask | 00000000.00000000.00000000.00000000 |
| Network / host bits | 0 / 32 |
| Total addresses | 4,294,967,296 |
| Usable hosts | 4,294,967,294 |
| Example | 192.168.10.77/0 → network 0.0.0.0, hosts 0.0.0.1 – 255.255.255.254, broadcast 255.255.255.255 |
Where /0 is used
The default route (0.0.0.0/0), matching every address.
Block boundaries: a /0 must start at a multiple of 4,294,967,296 addresses. Calculate any specific address in the subnet calculator.
Neighbouring prefixes
Questions
How many hosts in a /0?
4,294,967,296 addresses, of which 4,294,967,294 are usable (the first is the network address and the last is broadcast).
What is the subnet mask for /0?
0.0.0.0. In binary: 00000000.00000000.00000000.00000000. The wildcard (inverse) mask is 255.255.255.255.