18.153.159.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (18.153.159.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 18.153.159.127 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 | 18.153.159.0/25 |
| Network Address | 18.153.159.0 |
| Broadcast Address | 18.153.159.127 |
| 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 | 18.153.159.1 |
| Last Usable IP | 18.153.159.126 |
| Network (Hex) | 0x12999F00 |
| Broadcast (Hex) | 0x12999F7F |
| 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 18.153.159.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 18.153.159.0/26 | 18.153.159.0 | 18.153.159.1 | 18.153.159.62 | 18.153.159.63 | 62 |
| 2 | 18.153.159.64/26 | 18.153.159.64 | 18.153.159.65 | 18.153.159.126 | 18.153.159.127 | 62 |
Split 18.153.159.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 18.153.159.0/27 | 18.153.159.0 | 18.153.159.1 | 18.153.159.30 | 18.153.159.31 | 30 |
| 2 | 18.153.159.32/27 | 18.153.159.32 | 18.153.159.33 | 18.153.159.62 | 18.153.159.63 | 30 |
| 3 | 18.153.159.64/27 | 18.153.159.64 | 18.153.159.65 | 18.153.159.94 | 18.153.159.95 | 30 |
| 4 | 18.153.159.96/27 | 18.153.159.96 | 18.153.159.97 | 18.153.159.126 | 18.153.159.127 | 30 |
Split 18.153.159.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 18.153.159.0/28 | 18.153.159.0 | 18.153.159.1 | 18.153.159.14 | 18.153.159.15 | 14 |
| 2 | 18.153.159.16/28 | 18.153.159.16 | 18.153.159.17 | 18.153.159.30 | 18.153.159.31 | 14 |
| 3 | 18.153.159.32/28 | 18.153.159.32 | 18.153.159.33 | 18.153.159.46 | 18.153.159.47 | 14 |
| 4 | 18.153.159.48/28 | 18.153.159.48 | 18.153.159.49 | 18.153.159.62 | 18.153.159.63 | 14 |
| 5 | 18.153.159.64/28 | 18.153.159.64 | 18.153.159.65 | 18.153.159.78 | 18.153.159.79 | 14 |
| 6 | 18.153.159.80/28 | 18.153.159.80 | 18.153.159.81 | 18.153.159.94 | 18.153.159.95 | 14 |
| 7 | 18.153.159.96/28 | 18.153.159.96 | 18.153.159.97 | 18.153.159.110 | 18.153.159.111 | 14 |
| 8 | 18.153.159.112/28 | 18.153.159.112 | 18.153.159.113 | 18.153.159.126 | 18.153.159.127 | 14 |
Split 18.153.159.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 18.153.159.0/29 | 18.153.159.0 | 18.153.159.1 | 18.153.159.6 | 18.153.159.7 | 6 |
| 2 | 18.153.159.8/29 | 18.153.159.8 | 18.153.159.9 | 18.153.159.14 | 18.153.159.15 | 6 |
| 3 | 18.153.159.16/29 | 18.153.159.16 | 18.153.159.17 | 18.153.159.22 | 18.153.159.23 | 6 |
| 4 | 18.153.159.24/29 | 18.153.159.24 | 18.153.159.25 | 18.153.159.30 | 18.153.159.31 | 6 |
| 5 | 18.153.159.32/29 | 18.153.159.32 | 18.153.159.33 | 18.153.159.38 | 18.153.159.39 | 6 |
| 6 | 18.153.159.40/29 | 18.153.159.40 | 18.153.159.41 | 18.153.159.46 | 18.153.159.47 | 6 |
| 7 | 18.153.159.48/29 | 18.153.159.48 | 18.153.159.49 | 18.153.159.54 | 18.153.159.55 | 6 |
| 8 | 18.153.159.56/29 | 18.153.159.56 | 18.153.159.57 | 18.153.159.62 | 18.153.159.63 | 6 |
| 9 | 18.153.159.64/29 | 18.153.159.64 | 18.153.159.65 | 18.153.159.70 | 18.153.159.71 | 6 |
| 10 | 18.153.159.72/29 | 18.153.159.72 | 18.153.159.73 | 18.153.159.78 | 18.153.159.79 | 6 |
| 11 | 18.153.159.80/29 | 18.153.159.80 | 18.153.159.81 | 18.153.159.86 | 18.153.159.87 | 6 |
| 12 | 18.153.159.88/29 | 18.153.159.88 | 18.153.159.89 | 18.153.159.94 | 18.153.159.95 | 6 |
| 13 | 18.153.159.96/29 | 18.153.159.96 | 18.153.159.97 | 18.153.159.102 | 18.153.159.103 | 6 |
| 14 | 18.153.159.104/29 | 18.153.159.104 | 18.153.159.105 | 18.153.159.110 | 18.153.159.111 | 6 |
| 15 | 18.153.159.112/29 | 18.153.159.112 | 18.153.159.113 | 18.153.159.118 | 18.153.159.119 | 6 |
| 16 | 18.153.159.120/29 | 18.153.159.120 | 18.153.159.121 | 18.153.159.126 | 18.153.159.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.