0.0.0.0/6
PublicClass A — /6 prefix — 67,108,862 usable hosts
Network Address
0.0.0.0
Broadcast Address
3.255.255.255
Subnet Mask
252.0.0.0
Usable Hosts
67,108,862
First Usable IP
0.0.0.1
Last Usable IP
3.255.255.254
Total IPs
67,108,864
Prefix Length
Network address — the base address of the block (0.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 3.255.255.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 67,108,862 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 252.0.0.0 is the dotted-decimal equivalent of /6. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 0.0.0.0/6 |
| Network Address | 0.0.0.0 |
| Broadcast Address | 3.255.255.255 |
| Subnet Mask | 252.0.0.0 |
| Wildcard Mask | 3.255.255.255 |
| Prefix Length | /6 |
| IP Address Class | Class A |
| Total IP Addresses | 67,108,864 |
| Usable Host Addresses | 67,108,862 |
| First Usable IP | 0.0.0.1 |
| Last Usable IP | 3.255.255.254 |
| Network (Hex) | 0x00000000 |
| Broadcast (Hex) | 0x03FFFFFF |
| Address Type | Public / Globally Routable |
Binary Representation
Network Address
00000
00000000.00000000.00000000.00000000
Subnet Mask
11111100.00000000.00000000.00000000
The first 6 bits (1s in the mask) identify the network. The remaining 26 bits identify hosts within the network.
/6 Subnet Reference
Total IPs
67,108,864
Usable Hosts
67,108,862
Subnet Mask
252.0.0.0
Wildcard
3.255.255.255