56.0.0.0/5
PublicClass A — /5 prefix — 134,217,726 usable hosts
Network address — the base address of the block (56.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 63.255.255.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 134,217,726 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 248.0.0.0 is the dotted-decimal equivalent of /5. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 56.0.0.0/5 |
| Network Address | 56.0.0.0 |
| Broadcast Address | 63.255.255.255 |
| Subnet Mask | 248.0.0.0 |
| Wildcard Mask | 7.255.255.255 |
| Prefix Length | /5 |
| IP Address Class | Class A |
| Total IP Addresses | 134,217,728 |
| Usable Host Addresses | 134,217,726 |
| First Usable IP | 56.0.0.1 |
| Last Usable IP | 63.255.255.254 |
| Network (Hex) | 0x38000000 |
| Broadcast (Hex) | 0x3FFFFFFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 5 bits (1s in the mask) identify the network. The remaining 27 bits identify hosts within the network.
Split into Equal Subnets
Split 56.0.0.0/5 into 2 equal /6 subnets (67,108,862 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 56.0.0.0/6 | 56.0.0.0 | 56.0.0.1 | 59.255.255.254 | 59.255.255.255 | 67,108,862 |
| 2 | 60.0.0.0/6 | 60.0.0.0 | 60.0.0.1 | 63.255.255.254 | 63.255.255.255 | 67,108,862 |
Split 56.0.0.0/5 into 4 equal /7 subnets (33,554,430 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 56.0.0.0/7 | 56.0.0.0 | 56.0.0.1 | 57.255.255.254 | 57.255.255.255 | 33,554,430 |
| 2 | 58.0.0.0/7 | 58.0.0.0 | 58.0.0.1 | 59.255.255.254 | 59.255.255.255 | 33,554,430 |
| 3 | 60.0.0.0/7 | 60.0.0.0 | 60.0.0.1 | 61.255.255.254 | 61.255.255.255 | 33,554,430 |
| 4 | 62.0.0.0/7 | 62.0.0.0 | 62.0.0.1 | 63.255.255.254 | 63.255.255.255 | 33,554,430 |
Split 56.0.0.0/5 into 8 equal /8 subnets (16,777,214 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 56.0.0.0/8 | 56.0.0.0 | 56.0.0.1 | 56.255.255.254 | 56.255.255.255 | 16,777,214 |
| 2 | 57.0.0.0/8 | 57.0.0.0 | 57.0.0.1 | 57.255.255.254 | 57.255.255.255 | 16,777,214 |
| 3 | 58.0.0.0/8 | 58.0.0.0 | 58.0.0.1 | 58.255.255.254 | 58.255.255.255 | 16,777,214 |
| 4 | 59.0.0.0/8 | 59.0.0.0 | 59.0.0.1 | 59.255.255.254 | 59.255.255.255 | 16,777,214 |
| 5 | 60.0.0.0/8 | 60.0.0.0 | 60.0.0.1 | 60.255.255.254 | 60.255.255.255 | 16,777,214 |
| 6 | 61.0.0.0/8 | 61.0.0.0 | 61.0.0.1 | 61.255.255.254 | 61.255.255.255 | 16,777,214 |
| 7 | 62.0.0.0/8 | 62.0.0.0 | 62.0.0.1 | 62.255.255.254 | 62.255.255.255 | 16,777,214 |
| 8 | 63.0.0.0/8 | 63.0.0.0 | 63.0.0.1 | 63.255.255.254 | 63.255.255.255 | 16,777,214 |
Split 56.0.0.0/5 into 16 equal /9 subnets (8,388,606 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 56.0.0.0/9 | 56.0.0.0 | 56.0.0.1 | 56.127.255.254 | 56.127.255.255 | 8,388,606 |
| 2 | 56.128.0.0/9 | 56.128.0.0 | 56.128.0.1 | 56.255.255.254 | 56.255.255.255 | 8,388,606 |
| 3 | 57.0.0.0/9 | 57.0.0.0 | 57.0.0.1 | 57.127.255.254 | 57.127.255.255 | 8,388,606 |
| 4 | 57.128.0.0/9 | 57.128.0.0 | 57.128.0.1 | 57.255.255.254 | 57.255.255.255 | 8,388,606 |
| 5 | 58.0.0.0/9 | 58.0.0.0 | 58.0.0.1 | 58.127.255.254 | 58.127.255.255 | 8,388,606 |
| 6 | 58.128.0.0/9 | 58.128.0.0 | 58.128.0.1 | 58.255.255.254 | 58.255.255.255 | 8,388,606 |
| 7 | 59.0.0.0/9 | 59.0.0.0 | 59.0.0.1 | 59.127.255.254 | 59.127.255.255 | 8,388,606 |
| 8 | 59.128.0.0/9 | 59.128.0.0 | 59.128.0.1 | 59.255.255.254 | 59.255.255.255 | 8,388,606 |
| 9 | 60.0.0.0/9 | 60.0.0.0 | 60.0.0.1 | 60.127.255.254 | 60.127.255.255 | 8,388,606 |
| 10 | 60.128.0.0/9 | 60.128.0.0 | 60.128.0.1 | 60.255.255.254 | 60.255.255.255 | 8,388,606 |
| 11 | 61.0.0.0/9 | 61.0.0.0 | 61.0.0.1 | 61.127.255.254 | 61.127.255.255 | 8,388,606 |
| 12 | 61.128.0.0/9 | 61.128.0.0 | 61.128.0.1 | 61.255.255.254 | 61.255.255.255 | 8,388,606 |
| 13 | 62.0.0.0/9 | 62.0.0.0 | 62.0.0.1 | 62.127.255.254 | 62.127.255.255 | 8,388,606 |
| 14 | 62.128.0.0/9 | 62.128.0.0 | 62.128.0.1 | 62.255.255.254 | 62.255.255.255 | 8,388,606 |
| 15 | 63.0.0.0/9 | 63.0.0.0 | 63.0.0.1 | 63.127.255.254 | 63.127.255.255 | 8,388,606 |
| 16 | 63.128.0.0/9 | 63.128.0.0 | 63.128.0.1 | 63.255.255.254 | 63.255.255.255 | 8,388,606 |