172.80.129.32/27
PublicClass B — /27 prefix — 30 usable hosts
Network address — the base address of the block (172.80.129.32). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 172.80.129.63 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 | 172.80.129.32/27 |
| Network Address | 172.80.129.32 |
| Broadcast Address | 172.80.129.63 |
| Subnet Mask | 255.255.255.224 |
| Wildcard Mask | 0.0.0.31 |
| Prefix Length | /27 |
| IP Address Class | Class B |
| Total IP Addresses | 32 |
| Usable Host Addresses | 30 |
| First Usable IP | 172.80.129.33 |
| Last Usable IP | 172.80.129.62 |
| Network (Hex) | 0xAC508120 |
| Broadcast (Hex) | 0xAC50813F |
| Address Type | Public / Globally Routable |
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 172.80.129.32/27 into 2 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.80.129.32/28 | 172.80.129.32 | 172.80.129.33 | 172.80.129.46 | 172.80.129.47 | 14 |
| 2 | 172.80.129.48/28 | 172.80.129.48 | 172.80.129.49 | 172.80.129.62 | 172.80.129.63 | 14 |
Split 172.80.129.32/27 into 4 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.80.129.32/29 | 172.80.129.32 | 172.80.129.33 | 172.80.129.38 | 172.80.129.39 | 6 |
| 2 | 172.80.129.40/29 | 172.80.129.40 | 172.80.129.41 | 172.80.129.46 | 172.80.129.47 | 6 |
| 3 | 172.80.129.48/29 | 172.80.129.48 | 172.80.129.49 | 172.80.129.54 | 172.80.129.55 | 6 |
| 4 | 172.80.129.56/29 | 172.80.129.56 | 172.80.129.57 | 172.80.129.62 | 172.80.129.63 | 6 |
Split 172.80.129.32/27 into 8 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.80.129.32/30 | 172.80.129.32 | 172.80.129.33 | 172.80.129.34 | 172.80.129.35 | 2 |
| 2 | 172.80.129.36/30 | 172.80.129.36 | 172.80.129.37 | 172.80.129.38 | 172.80.129.39 | 2 |
| 3 | 172.80.129.40/30 | 172.80.129.40 | 172.80.129.41 | 172.80.129.42 | 172.80.129.43 | 2 |
| 4 | 172.80.129.44/30 | 172.80.129.44 | 172.80.129.45 | 172.80.129.46 | 172.80.129.47 | 2 |
| 5 | 172.80.129.48/30 | 172.80.129.48 | 172.80.129.49 | 172.80.129.50 | 172.80.129.51 | 2 |
| 6 | 172.80.129.52/30 | 172.80.129.52 | 172.80.129.53 | 172.80.129.54 | 172.80.129.55 | 2 |
| 7 | 172.80.129.56/30 | 172.80.129.56 | 172.80.129.57 | 172.80.129.58 | 172.80.129.59 | 2 |
| 8 | 172.80.129.60/30 | 172.80.129.60 | 172.80.129.61 | 172.80.129.62 | 172.80.129.63 | 2 |
IP Address Sample
Showing first 16 of 32 total IPs.