151.78.52.0/23
PublicClass B — /23 prefix — 510 usable hosts
Network address — the base address of the block (151.78.52.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.78.53.255 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 | 151.78.52.0/23 |
| Network Address | 151.78.52.0 |
| Broadcast Address | 151.78.53.255 |
| 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 | 151.78.52.1 |
| Last Usable IP | 151.78.53.254 |
| Network (Hex) | 0x974E3400 |
| Broadcast (Hex) | 0x974E35FF |
| 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 151.78.52.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.52.0/24 | 151.78.52.0 | 151.78.52.1 | 151.78.52.254 | 151.78.52.255 | 254 |
| 2 | 151.78.53.0/24 | 151.78.53.0 | 151.78.53.1 | 151.78.53.254 | 151.78.53.255 | 254 |
Split 151.78.52.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.52.0/25 | 151.78.52.0 | 151.78.52.1 | 151.78.52.126 | 151.78.52.127 | 126 |
| 2 | 151.78.52.128/25 | 151.78.52.128 | 151.78.52.129 | 151.78.52.254 | 151.78.52.255 | 126 |
| 3 | 151.78.53.0/25 | 151.78.53.0 | 151.78.53.1 | 151.78.53.126 | 151.78.53.127 | 126 |
| 4 | 151.78.53.128/25 | 151.78.53.128 | 151.78.53.129 | 151.78.53.254 | 151.78.53.255 | 126 |
Split 151.78.52.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.52.0/26 | 151.78.52.0 | 151.78.52.1 | 151.78.52.62 | 151.78.52.63 | 62 |
| 2 | 151.78.52.64/26 | 151.78.52.64 | 151.78.52.65 | 151.78.52.126 | 151.78.52.127 | 62 |
| 3 | 151.78.52.128/26 | 151.78.52.128 | 151.78.52.129 | 151.78.52.190 | 151.78.52.191 | 62 |
| 4 | 151.78.52.192/26 | 151.78.52.192 | 151.78.52.193 | 151.78.52.254 | 151.78.52.255 | 62 |
| 5 | 151.78.53.0/26 | 151.78.53.0 | 151.78.53.1 | 151.78.53.62 | 151.78.53.63 | 62 |
| 6 | 151.78.53.64/26 | 151.78.53.64 | 151.78.53.65 | 151.78.53.126 | 151.78.53.127 | 62 |
| 7 | 151.78.53.128/26 | 151.78.53.128 | 151.78.53.129 | 151.78.53.190 | 151.78.53.191 | 62 |
| 8 | 151.78.53.192/26 | 151.78.53.192 | 151.78.53.193 | 151.78.53.254 | 151.78.53.255 | 62 |
Split 151.78.52.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 151.78.52.0/27 | 151.78.52.0 | 151.78.52.1 | 151.78.52.30 | 151.78.52.31 | 30 |
| 2 | 151.78.52.32/27 | 151.78.52.32 | 151.78.52.33 | 151.78.52.62 | 151.78.52.63 | 30 |
| 3 | 151.78.52.64/27 | 151.78.52.64 | 151.78.52.65 | 151.78.52.94 | 151.78.52.95 | 30 |
| 4 | 151.78.52.96/27 | 151.78.52.96 | 151.78.52.97 | 151.78.52.126 | 151.78.52.127 | 30 |
| 5 | 151.78.52.128/27 | 151.78.52.128 | 151.78.52.129 | 151.78.52.158 | 151.78.52.159 | 30 |
| 6 | 151.78.52.160/27 | 151.78.52.160 | 151.78.52.161 | 151.78.52.190 | 151.78.52.191 | 30 |
| 7 | 151.78.52.192/27 | 151.78.52.192 | 151.78.52.193 | 151.78.52.222 | 151.78.52.223 | 30 |
| 8 | 151.78.52.224/27 | 151.78.52.224 | 151.78.52.225 | 151.78.52.254 | 151.78.52.255 | 30 |
| 9 | 151.78.53.0/27 | 151.78.53.0 | 151.78.53.1 | 151.78.53.30 | 151.78.53.31 | 30 |
| 10 | 151.78.53.32/27 | 151.78.53.32 | 151.78.53.33 | 151.78.53.62 | 151.78.53.63 | 30 |
| 11 | 151.78.53.64/27 | 151.78.53.64 | 151.78.53.65 | 151.78.53.94 | 151.78.53.95 | 30 |
| 12 | 151.78.53.96/27 | 151.78.53.96 | 151.78.53.97 | 151.78.53.126 | 151.78.53.127 | 30 |
| 13 | 151.78.53.128/27 | 151.78.53.128 | 151.78.53.129 | 151.78.53.158 | 151.78.53.159 | 30 |
| 14 | 151.78.53.160/27 | 151.78.53.160 | 151.78.53.161 | 151.78.53.190 | 151.78.53.191 | 30 |
| 15 | 151.78.53.192/27 | 151.78.53.192 | 151.78.53.193 | 151.78.53.222 | 151.78.53.223 | 30 |
| 16 | 151.78.53.224/27 | 151.78.53.224 | 151.78.53.225 | 151.78.53.254 | 151.78.53.255 | 30 |