123.159.216.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (123.159.216.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 123.159.216.127 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 | 123.159.216.0/25 |
| Network Address | 123.159.216.0 |
| Broadcast Address | 123.159.216.127 |
| 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 | 123.159.216.1 |
| Last Usable IP | 123.159.216.126 |
| Network (Hex) | 0x7B9FD800 |
| Broadcast (Hex) | 0x7B9FD87F |
| 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 123.159.216.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 123.159.216.0/26 | 123.159.216.0 | 123.159.216.1 | 123.159.216.62 | 123.159.216.63 | 62 |
| 2 | 123.159.216.64/26 | 123.159.216.64 | 123.159.216.65 | 123.159.216.126 | 123.159.216.127 | 62 |
Split 123.159.216.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 123.159.216.0/27 | 123.159.216.0 | 123.159.216.1 | 123.159.216.30 | 123.159.216.31 | 30 |
| 2 | 123.159.216.32/27 | 123.159.216.32 | 123.159.216.33 | 123.159.216.62 | 123.159.216.63 | 30 |
| 3 | 123.159.216.64/27 | 123.159.216.64 | 123.159.216.65 | 123.159.216.94 | 123.159.216.95 | 30 |
| 4 | 123.159.216.96/27 | 123.159.216.96 | 123.159.216.97 | 123.159.216.126 | 123.159.216.127 | 30 |
Split 123.159.216.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 123.159.216.0/28 | 123.159.216.0 | 123.159.216.1 | 123.159.216.14 | 123.159.216.15 | 14 |
| 2 | 123.159.216.16/28 | 123.159.216.16 | 123.159.216.17 | 123.159.216.30 | 123.159.216.31 | 14 |
| 3 | 123.159.216.32/28 | 123.159.216.32 | 123.159.216.33 | 123.159.216.46 | 123.159.216.47 | 14 |
| 4 | 123.159.216.48/28 | 123.159.216.48 | 123.159.216.49 | 123.159.216.62 | 123.159.216.63 | 14 |
| 5 | 123.159.216.64/28 | 123.159.216.64 | 123.159.216.65 | 123.159.216.78 | 123.159.216.79 | 14 |
| 6 | 123.159.216.80/28 | 123.159.216.80 | 123.159.216.81 | 123.159.216.94 | 123.159.216.95 | 14 |
| 7 | 123.159.216.96/28 | 123.159.216.96 | 123.159.216.97 | 123.159.216.110 | 123.159.216.111 | 14 |
| 8 | 123.159.216.112/28 | 123.159.216.112 | 123.159.216.113 | 123.159.216.126 | 123.159.216.127 | 14 |
Split 123.159.216.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 123.159.216.0/29 | 123.159.216.0 | 123.159.216.1 | 123.159.216.6 | 123.159.216.7 | 6 |
| 2 | 123.159.216.8/29 | 123.159.216.8 | 123.159.216.9 | 123.159.216.14 | 123.159.216.15 | 6 |
| 3 | 123.159.216.16/29 | 123.159.216.16 | 123.159.216.17 | 123.159.216.22 | 123.159.216.23 | 6 |
| 4 | 123.159.216.24/29 | 123.159.216.24 | 123.159.216.25 | 123.159.216.30 | 123.159.216.31 | 6 |
| 5 | 123.159.216.32/29 | 123.159.216.32 | 123.159.216.33 | 123.159.216.38 | 123.159.216.39 | 6 |
| 6 | 123.159.216.40/29 | 123.159.216.40 | 123.159.216.41 | 123.159.216.46 | 123.159.216.47 | 6 |
| 7 | 123.159.216.48/29 | 123.159.216.48 | 123.159.216.49 | 123.159.216.54 | 123.159.216.55 | 6 |
| 8 | 123.159.216.56/29 | 123.159.216.56 | 123.159.216.57 | 123.159.216.62 | 123.159.216.63 | 6 |
| 9 | 123.159.216.64/29 | 123.159.216.64 | 123.159.216.65 | 123.159.216.70 | 123.159.216.71 | 6 |
| 10 | 123.159.216.72/29 | 123.159.216.72 | 123.159.216.73 | 123.159.216.78 | 123.159.216.79 | 6 |
| 11 | 123.159.216.80/29 | 123.159.216.80 | 123.159.216.81 | 123.159.216.86 | 123.159.216.87 | 6 |
| 12 | 123.159.216.88/29 | 123.159.216.88 | 123.159.216.89 | 123.159.216.94 | 123.159.216.95 | 6 |
| 13 | 123.159.216.96/29 | 123.159.216.96 | 123.159.216.97 | 123.159.216.102 | 123.159.216.103 | 6 |
| 14 | 123.159.216.104/29 | 123.159.216.104 | 123.159.216.105 | 123.159.216.110 | 123.159.216.111 | 6 |
| 15 | 123.159.216.112/29 | 123.159.216.112 | 123.159.216.113 | 123.159.216.118 | 123.159.216.119 | 6 |
| 16 | 123.159.216.120/29 | 123.159.216.120 | 123.159.216.121 | 123.159.216.126 | 123.159.216.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.