169.181.115.0/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (169.181.115.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 169.181.115.127 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 | 169.181.115.0/25 |
| Network Address | 169.181.115.0 |
| Broadcast Address | 169.181.115.127 |
| 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 | 169.181.115.1 |
| Last Usable IP | 169.181.115.126 |
| Network (Hex) | 0xA9B57300 |
| Broadcast (Hex) | 0xA9B5737F |
| 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 169.181.115.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 169.181.115.0/26 | 169.181.115.0 | 169.181.115.1 | 169.181.115.62 | 169.181.115.63 | 62 |
| 2 | 169.181.115.64/26 | 169.181.115.64 | 169.181.115.65 | 169.181.115.126 | 169.181.115.127 | 62 |
Split 169.181.115.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 169.181.115.0/27 | 169.181.115.0 | 169.181.115.1 | 169.181.115.30 | 169.181.115.31 | 30 |
| 2 | 169.181.115.32/27 | 169.181.115.32 | 169.181.115.33 | 169.181.115.62 | 169.181.115.63 | 30 |
| 3 | 169.181.115.64/27 | 169.181.115.64 | 169.181.115.65 | 169.181.115.94 | 169.181.115.95 | 30 |
| 4 | 169.181.115.96/27 | 169.181.115.96 | 169.181.115.97 | 169.181.115.126 | 169.181.115.127 | 30 |
Split 169.181.115.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 169.181.115.0/28 | 169.181.115.0 | 169.181.115.1 | 169.181.115.14 | 169.181.115.15 | 14 |
| 2 | 169.181.115.16/28 | 169.181.115.16 | 169.181.115.17 | 169.181.115.30 | 169.181.115.31 | 14 |
| 3 | 169.181.115.32/28 | 169.181.115.32 | 169.181.115.33 | 169.181.115.46 | 169.181.115.47 | 14 |
| 4 | 169.181.115.48/28 | 169.181.115.48 | 169.181.115.49 | 169.181.115.62 | 169.181.115.63 | 14 |
| 5 | 169.181.115.64/28 | 169.181.115.64 | 169.181.115.65 | 169.181.115.78 | 169.181.115.79 | 14 |
| 6 | 169.181.115.80/28 | 169.181.115.80 | 169.181.115.81 | 169.181.115.94 | 169.181.115.95 | 14 |
| 7 | 169.181.115.96/28 | 169.181.115.96 | 169.181.115.97 | 169.181.115.110 | 169.181.115.111 | 14 |
| 8 | 169.181.115.112/28 | 169.181.115.112 | 169.181.115.113 | 169.181.115.126 | 169.181.115.127 | 14 |
Split 169.181.115.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 169.181.115.0/29 | 169.181.115.0 | 169.181.115.1 | 169.181.115.6 | 169.181.115.7 | 6 |
| 2 | 169.181.115.8/29 | 169.181.115.8 | 169.181.115.9 | 169.181.115.14 | 169.181.115.15 | 6 |
| 3 | 169.181.115.16/29 | 169.181.115.16 | 169.181.115.17 | 169.181.115.22 | 169.181.115.23 | 6 |
| 4 | 169.181.115.24/29 | 169.181.115.24 | 169.181.115.25 | 169.181.115.30 | 169.181.115.31 | 6 |
| 5 | 169.181.115.32/29 | 169.181.115.32 | 169.181.115.33 | 169.181.115.38 | 169.181.115.39 | 6 |
| 6 | 169.181.115.40/29 | 169.181.115.40 | 169.181.115.41 | 169.181.115.46 | 169.181.115.47 | 6 |
| 7 | 169.181.115.48/29 | 169.181.115.48 | 169.181.115.49 | 169.181.115.54 | 169.181.115.55 | 6 |
| 8 | 169.181.115.56/29 | 169.181.115.56 | 169.181.115.57 | 169.181.115.62 | 169.181.115.63 | 6 |
| 9 | 169.181.115.64/29 | 169.181.115.64 | 169.181.115.65 | 169.181.115.70 | 169.181.115.71 | 6 |
| 10 | 169.181.115.72/29 | 169.181.115.72 | 169.181.115.73 | 169.181.115.78 | 169.181.115.79 | 6 |
| 11 | 169.181.115.80/29 | 169.181.115.80 | 169.181.115.81 | 169.181.115.86 | 169.181.115.87 | 6 |
| 12 | 169.181.115.88/29 | 169.181.115.88 | 169.181.115.89 | 169.181.115.94 | 169.181.115.95 | 6 |
| 13 | 169.181.115.96/29 | 169.181.115.96 | 169.181.115.97 | 169.181.115.102 | 169.181.115.103 | 6 |
| 14 | 169.181.115.104/29 | 169.181.115.104 | 169.181.115.105 | 169.181.115.110 | 169.181.115.111 | 6 |
| 15 | 169.181.115.112/29 | 169.181.115.112 | 169.181.115.113 | 169.181.115.118 | 169.181.115.119 | 6 |
| 16 | 169.181.115.120/29 | 169.181.115.120 | 169.181.115.121 | 169.181.115.126 | 169.181.115.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.