72.151.131.0/25
PublicClass A — /25 prefix — 126 usable hosts
Network address — the base address of the block (72.151.131.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 72.151.131.127 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 | 72.151.131.0/25 |
| Network Address | 72.151.131.0 |
| Broadcast Address | 72.151.131.127 |
| 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 | 72.151.131.1 |
| Last Usable IP | 72.151.131.126 |
| Network (Hex) | 0x48978300 |
| Broadcast (Hex) | 0x4897837F |
| 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 72.151.131.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 72.151.131.0/26 | 72.151.131.0 | 72.151.131.1 | 72.151.131.62 | 72.151.131.63 | 62 |
| 2 | 72.151.131.64/26 | 72.151.131.64 | 72.151.131.65 | 72.151.131.126 | 72.151.131.127 | 62 |
Split 72.151.131.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 72.151.131.0/27 | 72.151.131.0 | 72.151.131.1 | 72.151.131.30 | 72.151.131.31 | 30 |
| 2 | 72.151.131.32/27 | 72.151.131.32 | 72.151.131.33 | 72.151.131.62 | 72.151.131.63 | 30 |
| 3 | 72.151.131.64/27 | 72.151.131.64 | 72.151.131.65 | 72.151.131.94 | 72.151.131.95 | 30 |
| 4 | 72.151.131.96/27 | 72.151.131.96 | 72.151.131.97 | 72.151.131.126 | 72.151.131.127 | 30 |
Split 72.151.131.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 72.151.131.0/28 | 72.151.131.0 | 72.151.131.1 | 72.151.131.14 | 72.151.131.15 | 14 |
| 2 | 72.151.131.16/28 | 72.151.131.16 | 72.151.131.17 | 72.151.131.30 | 72.151.131.31 | 14 |
| 3 | 72.151.131.32/28 | 72.151.131.32 | 72.151.131.33 | 72.151.131.46 | 72.151.131.47 | 14 |
| 4 | 72.151.131.48/28 | 72.151.131.48 | 72.151.131.49 | 72.151.131.62 | 72.151.131.63 | 14 |
| 5 | 72.151.131.64/28 | 72.151.131.64 | 72.151.131.65 | 72.151.131.78 | 72.151.131.79 | 14 |
| 6 | 72.151.131.80/28 | 72.151.131.80 | 72.151.131.81 | 72.151.131.94 | 72.151.131.95 | 14 |
| 7 | 72.151.131.96/28 | 72.151.131.96 | 72.151.131.97 | 72.151.131.110 | 72.151.131.111 | 14 |
| 8 | 72.151.131.112/28 | 72.151.131.112 | 72.151.131.113 | 72.151.131.126 | 72.151.131.127 | 14 |
Split 72.151.131.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 72.151.131.0/29 | 72.151.131.0 | 72.151.131.1 | 72.151.131.6 | 72.151.131.7 | 6 |
| 2 | 72.151.131.8/29 | 72.151.131.8 | 72.151.131.9 | 72.151.131.14 | 72.151.131.15 | 6 |
| 3 | 72.151.131.16/29 | 72.151.131.16 | 72.151.131.17 | 72.151.131.22 | 72.151.131.23 | 6 |
| 4 | 72.151.131.24/29 | 72.151.131.24 | 72.151.131.25 | 72.151.131.30 | 72.151.131.31 | 6 |
| 5 | 72.151.131.32/29 | 72.151.131.32 | 72.151.131.33 | 72.151.131.38 | 72.151.131.39 | 6 |
| 6 | 72.151.131.40/29 | 72.151.131.40 | 72.151.131.41 | 72.151.131.46 | 72.151.131.47 | 6 |
| 7 | 72.151.131.48/29 | 72.151.131.48 | 72.151.131.49 | 72.151.131.54 | 72.151.131.55 | 6 |
| 8 | 72.151.131.56/29 | 72.151.131.56 | 72.151.131.57 | 72.151.131.62 | 72.151.131.63 | 6 |
| 9 | 72.151.131.64/29 | 72.151.131.64 | 72.151.131.65 | 72.151.131.70 | 72.151.131.71 | 6 |
| 10 | 72.151.131.72/29 | 72.151.131.72 | 72.151.131.73 | 72.151.131.78 | 72.151.131.79 | 6 |
| 11 | 72.151.131.80/29 | 72.151.131.80 | 72.151.131.81 | 72.151.131.86 | 72.151.131.87 | 6 |
| 12 | 72.151.131.88/29 | 72.151.131.88 | 72.151.131.89 | 72.151.131.94 | 72.151.131.95 | 6 |
| 13 | 72.151.131.96/29 | 72.151.131.96 | 72.151.131.97 | 72.151.131.102 | 72.151.131.103 | 6 |
| 14 | 72.151.131.104/29 | 72.151.131.104 | 72.151.131.105 | 72.151.131.110 | 72.151.131.111 | 6 |
| 15 | 72.151.131.112/29 | 72.151.131.112 | 72.151.131.113 | 72.151.131.118 | 72.151.131.119 | 6 |
| 16 | 72.151.131.120/29 | 72.151.131.120 | 72.151.131.121 | 72.151.131.126 | 72.151.131.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.