172.40.34.0/25
PublicClass B — /25 prefix — 126 usable hosts
Network address — the base address of the block (172.40.34.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 172.40.34.127 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 | 172.40.34.0/25 |
| Network Address | 172.40.34.0 |
| Broadcast Address | 172.40.34.127 |
| 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 | 172.40.34.1 |
| Last Usable IP | 172.40.34.126 |
| Network (Hex) | 0xAC282200 |
| Broadcast (Hex) | 0xAC28227F |
| 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 172.40.34.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.40.34.0/26 | 172.40.34.0 | 172.40.34.1 | 172.40.34.62 | 172.40.34.63 | 62 |
| 2 | 172.40.34.64/26 | 172.40.34.64 | 172.40.34.65 | 172.40.34.126 | 172.40.34.127 | 62 |
Split 172.40.34.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.40.34.0/27 | 172.40.34.0 | 172.40.34.1 | 172.40.34.30 | 172.40.34.31 | 30 |
| 2 | 172.40.34.32/27 | 172.40.34.32 | 172.40.34.33 | 172.40.34.62 | 172.40.34.63 | 30 |
| 3 | 172.40.34.64/27 | 172.40.34.64 | 172.40.34.65 | 172.40.34.94 | 172.40.34.95 | 30 |
| 4 | 172.40.34.96/27 | 172.40.34.96 | 172.40.34.97 | 172.40.34.126 | 172.40.34.127 | 30 |
Split 172.40.34.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.40.34.0/28 | 172.40.34.0 | 172.40.34.1 | 172.40.34.14 | 172.40.34.15 | 14 |
| 2 | 172.40.34.16/28 | 172.40.34.16 | 172.40.34.17 | 172.40.34.30 | 172.40.34.31 | 14 |
| 3 | 172.40.34.32/28 | 172.40.34.32 | 172.40.34.33 | 172.40.34.46 | 172.40.34.47 | 14 |
| 4 | 172.40.34.48/28 | 172.40.34.48 | 172.40.34.49 | 172.40.34.62 | 172.40.34.63 | 14 |
| 5 | 172.40.34.64/28 | 172.40.34.64 | 172.40.34.65 | 172.40.34.78 | 172.40.34.79 | 14 |
| 6 | 172.40.34.80/28 | 172.40.34.80 | 172.40.34.81 | 172.40.34.94 | 172.40.34.95 | 14 |
| 7 | 172.40.34.96/28 | 172.40.34.96 | 172.40.34.97 | 172.40.34.110 | 172.40.34.111 | 14 |
| 8 | 172.40.34.112/28 | 172.40.34.112 | 172.40.34.113 | 172.40.34.126 | 172.40.34.127 | 14 |
Split 172.40.34.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 172.40.34.0/29 | 172.40.34.0 | 172.40.34.1 | 172.40.34.6 | 172.40.34.7 | 6 |
| 2 | 172.40.34.8/29 | 172.40.34.8 | 172.40.34.9 | 172.40.34.14 | 172.40.34.15 | 6 |
| 3 | 172.40.34.16/29 | 172.40.34.16 | 172.40.34.17 | 172.40.34.22 | 172.40.34.23 | 6 |
| 4 | 172.40.34.24/29 | 172.40.34.24 | 172.40.34.25 | 172.40.34.30 | 172.40.34.31 | 6 |
| 5 | 172.40.34.32/29 | 172.40.34.32 | 172.40.34.33 | 172.40.34.38 | 172.40.34.39 | 6 |
| 6 | 172.40.34.40/29 | 172.40.34.40 | 172.40.34.41 | 172.40.34.46 | 172.40.34.47 | 6 |
| 7 | 172.40.34.48/29 | 172.40.34.48 | 172.40.34.49 | 172.40.34.54 | 172.40.34.55 | 6 |
| 8 | 172.40.34.56/29 | 172.40.34.56 | 172.40.34.57 | 172.40.34.62 | 172.40.34.63 | 6 |
| 9 | 172.40.34.64/29 | 172.40.34.64 | 172.40.34.65 | 172.40.34.70 | 172.40.34.71 | 6 |
| 10 | 172.40.34.72/29 | 172.40.34.72 | 172.40.34.73 | 172.40.34.78 | 172.40.34.79 | 6 |
| 11 | 172.40.34.80/29 | 172.40.34.80 | 172.40.34.81 | 172.40.34.86 | 172.40.34.87 | 6 |
| 12 | 172.40.34.88/29 | 172.40.34.88 | 172.40.34.89 | 172.40.34.94 | 172.40.34.95 | 6 |
| 13 | 172.40.34.96/29 | 172.40.34.96 | 172.40.34.97 | 172.40.34.102 | 172.40.34.103 | 6 |
| 14 | 172.40.34.104/29 | 172.40.34.104 | 172.40.34.105 | 172.40.34.110 | 172.40.34.111 | 6 |
| 15 | 172.40.34.112/29 | 172.40.34.112 | 172.40.34.113 | 172.40.34.118 | 172.40.34.119 | 6 |
| 16 | 172.40.34.120/29 | 172.40.34.120 | 172.40.34.121 | 172.40.34.126 | 172.40.34.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.