102.159.0.0/23
PublicClass A — /23 prefix — 510 usable hosts
Network address — the base address of the block (102.159.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 102.159.1.255 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 | 102.159.0.0/23 |
| Network Address | 102.159.0.0 |
| Broadcast Address | 102.159.1.255 |
| Subnet Mask | 255.255.254.0 |
| Wildcard Mask | 0.0.1.255 |
| Prefix Length | /23 |
| IP Address Class | Class A |
| Total IP Addresses | 512 |
| Usable Host Addresses | 510 |
| First Usable IP | 102.159.0.1 |
| Last Usable IP | 102.159.1.254 |
| Network (Hex) | 0x669F0000 |
| Broadcast (Hex) | 0x669F01FF |
| 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 102.159.0.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.0.0/24 | 102.159.0.0 | 102.159.0.1 | 102.159.0.254 | 102.159.0.255 | 254 |
| 2 | 102.159.1.0/24 | 102.159.1.0 | 102.159.1.1 | 102.159.1.254 | 102.159.1.255 | 254 |
Split 102.159.0.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.0.0/25 | 102.159.0.0 | 102.159.0.1 | 102.159.0.126 | 102.159.0.127 | 126 |
| 2 | 102.159.0.128/25 | 102.159.0.128 | 102.159.0.129 | 102.159.0.254 | 102.159.0.255 | 126 |
| 3 | 102.159.1.0/25 | 102.159.1.0 | 102.159.1.1 | 102.159.1.126 | 102.159.1.127 | 126 |
| 4 | 102.159.1.128/25 | 102.159.1.128 | 102.159.1.129 | 102.159.1.254 | 102.159.1.255 | 126 |
Split 102.159.0.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.0.0/26 | 102.159.0.0 | 102.159.0.1 | 102.159.0.62 | 102.159.0.63 | 62 |
| 2 | 102.159.0.64/26 | 102.159.0.64 | 102.159.0.65 | 102.159.0.126 | 102.159.0.127 | 62 |
| 3 | 102.159.0.128/26 | 102.159.0.128 | 102.159.0.129 | 102.159.0.190 | 102.159.0.191 | 62 |
| 4 | 102.159.0.192/26 | 102.159.0.192 | 102.159.0.193 | 102.159.0.254 | 102.159.0.255 | 62 |
| 5 | 102.159.1.0/26 | 102.159.1.0 | 102.159.1.1 | 102.159.1.62 | 102.159.1.63 | 62 |
| 6 | 102.159.1.64/26 | 102.159.1.64 | 102.159.1.65 | 102.159.1.126 | 102.159.1.127 | 62 |
| 7 | 102.159.1.128/26 | 102.159.1.128 | 102.159.1.129 | 102.159.1.190 | 102.159.1.191 | 62 |
| 8 | 102.159.1.192/26 | 102.159.1.192 | 102.159.1.193 | 102.159.1.254 | 102.159.1.255 | 62 |
Split 102.159.0.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.0.0/27 | 102.159.0.0 | 102.159.0.1 | 102.159.0.30 | 102.159.0.31 | 30 |
| 2 | 102.159.0.32/27 | 102.159.0.32 | 102.159.0.33 | 102.159.0.62 | 102.159.0.63 | 30 |
| 3 | 102.159.0.64/27 | 102.159.0.64 | 102.159.0.65 | 102.159.0.94 | 102.159.0.95 | 30 |
| 4 | 102.159.0.96/27 | 102.159.0.96 | 102.159.0.97 | 102.159.0.126 | 102.159.0.127 | 30 |
| 5 | 102.159.0.128/27 | 102.159.0.128 | 102.159.0.129 | 102.159.0.158 | 102.159.0.159 | 30 |
| 6 | 102.159.0.160/27 | 102.159.0.160 | 102.159.0.161 | 102.159.0.190 | 102.159.0.191 | 30 |
| 7 | 102.159.0.192/27 | 102.159.0.192 | 102.159.0.193 | 102.159.0.222 | 102.159.0.223 | 30 |
| 8 | 102.159.0.224/27 | 102.159.0.224 | 102.159.0.225 | 102.159.0.254 | 102.159.0.255 | 30 |
| 9 | 102.159.1.0/27 | 102.159.1.0 | 102.159.1.1 | 102.159.1.30 | 102.159.1.31 | 30 |
| 10 | 102.159.1.32/27 | 102.159.1.32 | 102.159.1.33 | 102.159.1.62 | 102.159.1.63 | 30 |
| 11 | 102.159.1.64/27 | 102.159.1.64 | 102.159.1.65 | 102.159.1.94 | 102.159.1.95 | 30 |
| 12 | 102.159.1.96/27 | 102.159.1.96 | 102.159.1.97 | 102.159.1.126 | 102.159.1.127 | 30 |
| 13 | 102.159.1.128/27 | 102.159.1.128 | 102.159.1.129 | 102.159.1.158 | 102.159.1.159 | 30 |
| 14 | 102.159.1.160/27 | 102.159.1.160 | 102.159.1.161 | 102.159.1.190 | 102.159.1.191 | 30 |
| 15 | 102.159.1.192/27 | 102.159.1.192 | 102.159.1.193 | 102.159.1.222 | 102.159.1.223 | 30 |
| 16 | 102.159.1.224/27 | 102.159.1.224 | 102.159.1.225 | 102.159.1.254 | 102.159.1.255 | 30 |