159.142.102.0/23
PublicClass B — /23 prefix — 510 usable hosts
Network address — the base address of the block (159.142.102.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 159.142.103.255 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 | 159.142.102.0/23 |
| Network Address | 159.142.102.0 |
| Broadcast Address | 159.142.103.255 |
| 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 | 159.142.102.1 |
| Last Usable IP | 159.142.103.254 |
| Network (Hex) | 0x9F8E6600 |
| Broadcast (Hex) | 0x9F8E67FF |
| 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 159.142.102.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.142.102.0/24 | 159.142.102.0 | 159.142.102.1 | 159.142.102.254 | 159.142.102.255 | 254 |
| 2 | 159.142.103.0/24 | 159.142.103.0 | 159.142.103.1 | 159.142.103.254 | 159.142.103.255 | 254 |
Split 159.142.102.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.142.102.0/25 | 159.142.102.0 | 159.142.102.1 | 159.142.102.126 | 159.142.102.127 | 126 |
| 2 | 159.142.102.128/25 | 159.142.102.128 | 159.142.102.129 | 159.142.102.254 | 159.142.102.255 | 126 |
| 3 | 159.142.103.0/25 | 159.142.103.0 | 159.142.103.1 | 159.142.103.126 | 159.142.103.127 | 126 |
| 4 | 159.142.103.128/25 | 159.142.103.128 | 159.142.103.129 | 159.142.103.254 | 159.142.103.255 | 126 |
Split 159.142.102.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.142.102.0/26 | 159.142.102.0 | 159.142.102.1 | 159.142.102.62 | 159.142.102.63 | 62 |
| 2 | 159.142.102.64/26 | 159.142.102.64 | 159.142.102.65 | 159.142.102.126 | 159.142.102.127 | 62 |
| 3 | 159.142.102.128/26 | 159.142.102.128 | 159.142.102.129 | 159.142.102.190 | 159.142.102.191 | 62 |
| 4 | 159.142.102.192/26 | 159.142.102.192 | 159.142.102.193 | 159.142.102.254 | 159.142.102.255 | 62 |
| 5 | 159.142.103.0/26 | 159.142.103.0 | 159.142.103.1 | 159.142.103.62 | 159.142.103.63 | 62 |
| 6 | 159.142.103.64/26 | 159.142.103.64 | 159.142.103.65 | 159.142.103.126 | 159.142.103.127 | 62 |
| 7 | 159.142.103.128/26 | 159.142.103.128 | 159.142.103.129 | 159.142.103.190 | 159.142.103.191 | 62 |
| 8 | 159.142.103.192/26 | 159.142.103.192 | 159.142.103.193 | 159.142.103.254 | 159.142.103.255 | 62 |
Split 159.142.102.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 159.142.102.0/27 | 159.142.102.0 | 159.142.102.1 | 159.142.102.30 | 159.142.102.31 | 30 |
| 2 | 159.142.102.32/27 | 159.142.102.32 | 159.142.102.33 | 159.142.102.62 | 159.142.102.63 | 30 |
| 3 | 159.142.102.64/27 | 159.142.102.64 | 159.142.102.65 | 159.142.102.94 | 159.142.102.95 | 30 |
| 4 | 159.142.102.96/27 | 159.142.102.96 | 159.142.102.97 | 159.142.102.126 | 159.142.102.127 | 30 |
| 5 | 159.142.102.128/27 | 159.142.102.128 | 159.142.102.129 | 159.142.102.158 | 159.142.102.159 | 30 |
| 6 | 159.142.102.160/27 | 159.142.102.160 | 159.142.102.161 | 159.142.102.190 | 159.142.102.191 | 30 |
| 7 | 159.142.102.192/27 | 159.142.102.192 | 159.142.102.193 | 159.142.102.222 | 159.142.102.223 | 30 |
| 8 | 159.142.102.224/27 | 159.142.102.224 | 159.142.102.225 | 159.142.102.254 | 159.142.102.255 | 30 |
| 9 | 159.142.103.0/27 | 159.142.103.0 | 159.142.103.1 | 159.142.103.30 | 159.142.103.31 | 30 |
| 10 | 159.142.103.32/27 | 159.142.103.32 | 159.142.103.33 | 159.142.103.62 | 159.142.103.63 | 30 |
| 11 | 159.142.103.64/27 | 159.142.103.64 | 159.142.103.65 | 159.142.103.94 | 159.142.103.95 | 30 |
| 12 | 159.142.103.96/27 | 159.142.103.96 | 159.142.103.97 | 159.142.103.126 | 159.142.103.127 | 30 |
| 13 | 159.142.103.128/27 | 159.142.103.128 | 159.142.103.129 | 159.142.103.158 | 159.142.103.159 | 30 |
| 14 | 159.142.103.160/27 | 159.142.103.160 | 159.142.103.161 | 159.142.103.190 | 159.142.103.191 | 30 |
| 15 | 159.142.103.192/27 | 159.142.103.192 | 159.142.103.193 | 159.142.103.222 | 159.142.103.223 | 30 |
| 16 | 159.142.103.224/27 | 159.142.103.224 | 159.142.103.225 | 159.142.103.254 | 159.142.103.255 | 30 |