171.32.181.0/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (171.32.181.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 171.32.181.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 171.32.181.0/25 |
| Network Address | 171.32.181.0 |
| Broadcast Address | 171.32.181.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class B |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 171.32.181.1 |
| Last Usable IP | 171.32.181.126 |
| Network (Hex) | 0xAB20B500 |
| Broadcast (Hex) | 0xAB20B57F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 171.32.181.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.32.181.0/26 | 171.32.181.0 | 171.32.181.1 | 171.32.181.62 | 171.32.181.63 | 62 |
| 2 | 171.32.181.64/26 | 171.32.181.64 | 171.32.181.65 | 171.32.181.126 | 171.32.181.127 | 62 |
Split 171.32.181.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.32.181.0/27 | 171.32.181.0 | 171.32.181.1 | 171.32.181.30 | 171.32.181.31 | 30 |
| 2 | 171.32.181.32/27 | 171.32.181.32 | 171.32.181.33 | 171.32.181.62 | 171.32.181.63 | 30 |
| 3 | 171.32.181.64/27 | 171.32.181.64 | 171.32.181.65 | 171.32.181.94 | 171.32.181.95 | 30 |
| 4 | 171.32.181.96/27 | 171.32.181.96 | 171.32.181.97 | 171.32.181.126 | 171.32.181.127 | 30 |
Split 171.32.181.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.32.181.0/28 | 171.32.181.0 | 171.32.181.1 | 171.32.181.14 | 171.32.181.15 | 14 |
| 2 | 171.32.181.16/28 | 171.32.181.16 | 171.32.181.17 | 171.32.181.30 | 171.32.181.31 | 14 |
| 3 | 171.32.181.32/28 | 171.32.181.32 | 171.32.181.33 | 171.32.181.46 | 171.32.181.47 | 14 |
| 4 | 171.32.181.48/28 | 171.32.181.48 | 171.32.181.49 | 171.32.181.62 | 171.32.181.63 | 14 |
| 5 | 171.32.181.64/28 | 171.32.181.64 | 171.32.181.65 | 171.32.181.78 | 171.32.181.79 | 14 |
| 6 | 171.32.181.80/28 | 171.32.181.80 | 171.32.181.81 | 171.32.181.94 | 171.32.181.95 | 14 |
| 7 | 171.32.181.96/28 | 171.32.181.96 | 171.32.181.97 | 171.32.181.110 | 171.32.181.111 | 14 |
| 8 | 171.32.181.112/28 | 171.32.181.112 | 171.32.181.113 | 171.32.181.126 | 171.32.181.127 | 14 |
Split 171.32.181.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.32.181.0/29 | 171.32.181.0 | 171.32.181.1 | 171.32.181.6 | 171.32.181.7 | 6 |
| 2 | 171.32.181.8/29 | 171.32.181.8 | 171.32.181.9 | 171.32.181.14 | 171.32.181.15 | 6 |
| 3 | 171.32.181.16/29 | 171.32.181.16 | 171.32.181.17 | 171.32.181.22 | 171.32.181.23 | 6 |
| 4 | 171.32.181.24/29 | 171.32.181.24 | 171.32.181.25 | 171.32.181.30 | 171.32.181.31 | 6 |
| 5 | 171.32.181.32/29 | 171.32.181.32 | 171.32.181.33 | 171.32.181.38 | 171.32.181.39 | 6 |
| 6 | 171.32.181.40/29 | 171.32.181.40 | 171.32.181.41 | 171.32.181.46 | 171.32.181.47 | 6 |
| 7 | 171.32.181.48/29 | 171.32.181.48 | 171.32.181.49 | 171.32.181.54 | 171.32.181.55 | 6 |
| 8 | 171.32.181.56/29 | 171.32.181.56 | 171.32.181.57 | 171.32.181.62 | 171.32.181.63 | 6 |
| 9 | 171.32.181.64/29 | 171.32.181.64 | 171.32.181.65 | 171.32.181.70 | 171.32.181.71 | 6 |
| 10 | 171.32.181.72/29 | 171.32.181.72 | 171.32.181.73 | 171.32.181.78 | 171.32.181.79 | 6 |
| 11 | 171.32.181.80/29 | 171.32.181.80 | 171.32.181.81 | 171.32.181.86 | 171.32.181.87 | 6 |
| 12 | 171.32.181.88/29 | 171.32.181.88 | 171.32.181.89 | 171.32.181.94 | 171.32.181.95 | 6 |
| 13 | 171.32.181.96/29 | 171.32.181.96 | 171.32.181.97 | 171.32.181.102 | 171.32.181.103 | 6 |
| 14 | 171.32.181.104/29 | 171.32.181.104 | 171.32.181.105 | 171.32.181.110 | 171.32.181.111 | 6 |
| 15 | 171.32.181.112/29 | 171.32.181.112 | 171.32.181.113 | 171.32.181.118 | 171.32.181.119 | 6 |
| 16 | 171.32.181.120/29 | 171.32.181.120 | 171.32.181.121 | 171.32.181.126 | 171.32.181.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.