157.72.96.0/23
PublicClass B — /23 prefix — 510 usable hosts
Network address — the base address of the block (157.72.96.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 157.72.97.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 510 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.254.0 is the dotted-decimal equivalent of /23. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 157.72.96.0/23 |
| Network Address | 157.72.96.0 |
| Broadcast Address | 157.72.97.255 |
| Subnet Mask | 255.255.254.0 |
| Wildcard Mask | 0.0.1.255 |
| Prefix Length | /23 |
| IP Address Class | Class B |
| Total IP Addresses | 512 |
| Usable Host Addresses | 510 |
| First Usable IP | 157.72.96.1 |
| Last Usable IP | 157.72.97.254 |
| Network (Hex) | 0x9D486000 |
| Broadcast (Hex) | 0x9D4861FF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 23 bits (1s in the mask) identify the network. The remaining 9 bits identify hosts within the network.
Split into Equal Subnets
Split 157.72.96.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 157.72.96.0/24 | 157.72.96.0 | 157.72.96.1 | 157.72.96.254 | 157.72.96.255 | 254 |
| 2 | 157.72.97.0/24 | 157.72.97.0 | 157.72.97.1 | 157.72.97.254 | 157.72.97.255 | 254 |
Split 157.72.96.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 157.72.96.0/25 | 157.72.96.0 | 157.72.96.1 | 157.72.96.126 | 157.72.96.127 | 126 |
| 2 | 157.72.96.128/25 | 157.72.96.128 | 157.72.96.129 | 157.72.96.254 | 157.72.96.255 | 126 |
| 3 | 157.72.97.0/25 | 157.72.97.0 | 157.72.97.1 | 157.72.97.126 | 157.72.97.127 | 126 |
| 4 | 157.72.97.128/25 | 157.72.97.128 | 157.72.97.129 | 157.72.97.254 | 157.72.97.255 | 126 |
Split 157.72.96.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 157.72.96.0/26 | 157.72.96.0 | 157.72.96.1 | 157.72.96.62 | 157.72.96.63 | 62 |
| 2 | 157.72.96.64/26 | 157.72.96.64 | 157.72.96.65 | 157.72.96.126 | 157.72.96.127 | 62 |
| 3 | 157.72.96.128/26 | 157.72.96.128 | 157.72.96.129 | 157.72.96.190 | 157.72.96.191 | 62 |
| 4 | 157.72.96.192/26 | 157.72.96.192 | 157.72.96.193 | 157.72.96.254 | 157.72.96.255 | 62 |
| 5 | 157.72.97.0/26 | 157.72.97.0 | 157.72.97.1 | 157.72.97.62 | 157.72.97.63 | 62 |
| 6 | 157.72.97.64/26 | 157.72.97.64 | 157.72.97.65 | 157.72.97.126 | 157.72.97.127 | 62 |
| 7 | 157.72.97.128/26 | 157.72.97.128 | 157.72.97.129 | 157.72.97.190 | 157.72.97.191 | 62 |
| 8 | 157.72.97.192/26 | 157.72.97.192 | 157.72.97.193 | 157.72.97.254 | 157.72.97.255 | 62 |
Split 157.72.96.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 157.72.96.0/27 | 157.72.96.0 | 157.72.96.1 | 157.72.96.30 | 157.72.96.31 | 30 |
| 2 | 157.72.96.32/27 | 157.72.96.32 | 157.72.96.33 | 157.72.96.62 | 157.72.96.63 | 30 |
| 3 | 157.72.96.64/27 | 157.72.96.64 | 157.72.96.65 | 157.72.96.94 | 157.72.96.95 | 30 |
| 4 | 157.72.96.96/27 | 157.72.96.96 | 157.72.96.97 | 157.72.96.126 | 157.72.96.127 | 30 |
| 5 | 157.72.96.128/27 | 157.72.96.128 | 157.72.96.129 | 157.72.96.158 | 157.72.96.159 | 30 |
| 6 | 157.72.96.160/27 | 157.72.96.160 | 157.72.96.161 | 157.72.96.190 | 157.72.96.191 | 30 |
| 7 | 157.72.96.192/27 | 157.72.96.192 | 157.72.96.193 | 157.72.96.222 | 157.72.96.223 | 30 |
| 8 | 157.72.96.224/27 | 157.72.96.224 | 157.72.96.225 | 157.72.96.254 | 157.72.96.255 | 30 |
| 9 | 157.72.97.0/27 | 157.72.97.0 | 157.72.97.1 | 157.72.97.30 | 157.72.97.31 | 30 |
| 10 | 157.72.97.32/27 | 157.72.97.32 | 157.72.97.33 | 157.72.97.62 | 157.72.97.63 | 30 |
| 11 | 157.72.97.64/27 | 157.72.97.64 | 157.72.97.65 | 157.72.97.94 | 157.72.97.95 | 30 |
| 12 | 157.72.97.96/27 | 157.72.97.96 | 157.72.97.97 | 157.72.97.126 | 157.72.97.127 | 30 |
| 13 | 157.72.97.128/27 | 157.72.97.128 | 157.72.97.129 | 157.72.97.158 | 157.72.97.159 | 30 |
| 14 | 157.72.97.160/27 | 157.72.97.160 | 157.72.97.161 | 157.72.97.190 | 157.72.97.191 | 30 |
| 15 | 157.72.97.192/27 | 157.72.97.192 | 157.72.97.193 | 157.72.97.222 | 157.72.97.223 | 30 |
| 16 | 157.72.97.224/27 | 157.72.97.224 | 157.72.97.225 | 157.72.97.254 | 157.72.97.255 | 30 |