10.31.54.64/27
Private (RFC 1918) RFC 1918Class A — /27 prefix — 30 usable hosts
Network address — the base address of the block (10.31.54.64). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 10.31.54.95 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 10.31.54.64/27 |
| Network Address | 10.31.54.64 |
| Broadcast Address | 10.31.54.95 |
| Subnet Mask | 255.255.255.224 |
| Wildcard Mask | 0.0.0.31 |
| Prefix Length | /27 |
| IP Address Class | Class A |
| Total IP Addresses | 32 |
| Usable Host Addresses | 30 |
| First Usable IP | 10.31.54.65 |
| Last Usable IP | 10.31.54.94 |
| Network (Hex) | 0x0A1F3640 |
| Broadcast (Hex) | 0x0A1F365F |
| Governing RFC | RFC 1918 |
| Address Type | Private (RFC 1918) |
Binary Representation
The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.
Split into Equal Subnets
Split 10.31.54.64/27 into 2 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.54.64/28 | 10.31.54.64 | 10.31.54.65 | 10.31.54.78 | 10.31.54.79 | 14 |
| 2 | 10.31.54.80/28 | 10.31.54.80 | 10.31.54.81 | 10.31.54.94 | 10.31.54.95 | 14 |
Split 10.31.54.64/27 into 4 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.54.64/29 | 10.31.54.64 | 10.31.54.65 | 10.31.54.70 | 10.31.54.71 | 6 |
| 2 | 10.31.54.72/29 | 10.31.54.72 | 10.31.54.73 | 10.31.54.78 | 10.31.54.79 | 6 |
| 3 | 10.31.54.80/29 | 10.31.54.80 | 10.31.54.81 | 10.31.54.86 | 10.31.54.87 | 6 |
| 4 | 10.31.54.88/29 | 10.31.54.88 | 10.31.54.89 | 10.31.54.94 | 10.31.54.95 | 6 |
Split 10.31.54.64/27 into 8 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 10.31.54.64/30 | 10.31.54.64 | 10.31.54.65 | 10.31.54.66 | 10.31.54.67 | 2 |
| 2 | 10.31.54.68/30 | 10.31.54.68 | 10.31.54.69 | 10.31.54.70 | 10.31.54.71 | 2 |
| 3 | 10.31.54.72/30 | 10.31.54.72 | 10.31.54.73 | 10.31.54.74 | 10.31.54.75 | 2 |
| 4 | 10.31.54.76/30 | 10.31.54.76 | 10.31.54.77 | 10.31.54.78 | 10.31.54.79 | 2 |
| 5 | 10.31.54.80/30 | 10.31.54.80 | 10.31.54.81 | 10.31.54.82 | 10.31.54.83 | 2 |
| 6 | 10.31.54.84/30 | 10.31.54.84 | 10.31.54.85 | 10.31.54.86 | 10.31.54.87 | 2 |
| 7 | 10.31.54.88/30 | 10.31.54.88 | 10.31.54.89 | 10.31.54.90 | 10.31.54.91 | 2 |
| 8 | 10.31.54.92/30 | 10.31.54.92 | 10.31.54.93 | 10.31.54.94 | 10.31.54.95 | 2 |
IP Address Sample
Showing first 16 of 32 total IPs.