23.91.187.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (23.91.187.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 23.91.187.127 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 | 23.91.187.0/25 |
| Network Address | 23.91.187.0 |
| Broadcast Address | 23.91.187.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class A |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 23.91.187.1 |
| Last Usable IP | 23.91.187.126 |
| Network (Hex) | 0x175BBB00 |
| Broadcast (Hex) | 0x175BBB7F |
| 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 23.91.187.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 23.91.187.0/26 | 23.91.187.0 | 23.91.187.1 | 23.91.187.62 | 23.91.187.63 | 62 |
| 2 | 23.91.187.64/26 | 23.91.187.64 | 23.91.187.65 | 23.91.187.126 | 23.91.187.127 | 62 |
Split 23.91.187.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 23.91.187.0/27 | 23.91.187.0 | 23.91.187.1 | 23.91.187.30 | 23.91.187.31 | 30 |
| 2 | 23.91.187.32/27 | 23.91.187.32 | 23.91.187.33 | 23.91.187.62 | 23.91.187.63 | 30 |
| 3 | 23.91.187.64/27 | 23.91.187.64 | 23.91.187.65 | 23.91.187.94 | 23.91.187.95 | 30 |
| 4 | 23.91.187.96/27 | 23.91.187.96 | 23.91.187.97 | 23.91.187.126 | 23.91.187.127 | 30 |
Split 23.91.187.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 23.91.187.0/28 | 23.91.187.0 | 23.91.187.1 | 23.91.187.14 | 23.91.187.15 | 14 |
| 2 | 23.91.187.16/28 | 23.91.187.16 | 23.91.187.17 | 23.91.187.30 | 23.91.187.31 | 14 |
| 3 | 23.91.187.32/28 | 23.91.187.32 | 23.91.187.33 | 23.91.187.46 | 23.91.187.47 | 14 |
| 4 | 23.91.187.48/28 | 23.91.187.48 | 23.91.187.49 | 23.91.187.62 | 23.91.187.63 | 14 |
| 5 | 23.91.187.64/28 | 23.91.187.64 | 23.91.187.65 | 23.91.187.78 | 23.91.187.79 | 14 |
| 6 | 23.91.187.80/28 | 23.91.187.80 | 23.91.187.81 | 23.91.187.94 | 23.91.187.95 | 14 |
| 7 | 23.91.187.96/28 | 23.91.187.96 | 23.91.187.97 | 23.91.187.110 | 23.91.187.111 | 14 |
| 8 | 23.91.187.112/28 | 23.91.187.112 | 23.91.187.113 | 23.91.187.126 | 23.91.187.127 | 14 |
Split 23.91.187.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 23.91.187.0/29 | 23.91.187.0 | 23.91.187.1 | 23.91.187.6 | 23.91.187.7 | 6 |
| 2 | 23.91.187.8/29 | 23.91.187.8 | 23.91.187.9 | 23.91.187.14 | 23.91.187.15 | 6 |
| 3 | 23.91.187.16/29 | 23.91.187.16 | 23.91.187.17 | 23.91.187.22 | 23.91.187.23 | 6 |
| 4 | 23.91.187.24/29 | 23.91.187.24 | 23.91.187.25 | 23.91.187.30 | 23.91.187.31 | 6 |
| 5 | 23.91.187.32/29 | 23.91.187.32 | 23.91.187.33 | 23.91.187.38 | 23.91.187.39 | 6 |
| 6 | 23.91.187.40/29 | 23.91.187.40 | 23.91.187.41 | 23.91.187.46 | 23.91.187.47 | 6 |
| 7 | 23.91.187.48/29 | 23.91.187.48 | 23.91.187.49 | 23.91.187.54 | 23.91.187.55 | 6 |
| 8 | 23.91.187.56/29 | 23.91.187.56 | 23.91.187.57 | 23.91.187.62 | 23.91.187.63 | 6 |
| 9 | 23.91.187.64/29 | 23.91.187.64 | 23.91.187.65 | 23.91.187.70 | 23.91.187.71 | 6 |
| 10 | 23.91.187.72/29 | 23.91.187.72 | 23.91.187.73 | 23.91.187.78 | 23.91.187.79 | 6 |
| 11 | 23.91.187.80/29 | 23.91.187.80 | 23.91.187.81 | 23.91.187.86 | 23.91.187.87 | 6 |
| 12 | 23.91.187.88/29 | 23.91.187.88 | 23.91.187.89 | 23.91.187.94 | 23.91.187.95 | 6 |
| 13 | 23.91.187.96/29 | 23.91.187.96 | 23.91.187.97 | 23.91.187.102 | 23.91.187.103 | 6 |
| 14 | 23.91.187.104/29 | 23.91.187.104 | 23.91.187.105 | 23.91.187.110 | 23.91.187.111 | 6 |
| 15 | 23.91.187.112/29 | 23.91.187.112 | 23.91.187.113 | 23.91.187.118 | 23.91.187.119 | 6 |
| 16 | 23.91.187.120/29 | 23.91.187.120 | 23.91.187.121 | 23.91.187.126 | 23.91.187.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.