102.159.4.0/23
PublicClass A — /23 prefix — 510 usable hosts
Network address — the base address of the block (102.159.4.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 102.159.5.255 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 | 102.159.4.0/23 |
| Network Address | 102.159.4.0 |
| Broadcast Address | 102.159.5.255 |
| 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 | 102.159.4.1 |
| Last Usable IP | 102.159.5.254 |
| Network (Hex) | 0x669F0400 |
| Broadcast (Hex) | 0x669F05FF |
| 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 102.159.4.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.4.0/24 | 102.159.4.0 | 102.159.4.1 | 102.159.4.254 | 102.159.4.255 | 254 |
| 2 | 102.159.5.0/24 | 102.159.5.0 | 102.159.5.1 | 102.159.5.254 | 102.159.5.255 | 254 |
Split 102.159.4.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.4.0/25 | 102.159.4.0 | 102.159.4.1 | 102.159.4.126 | 102.159.4.127 | 126 |
| 2 | 102.159.4.128/25 | 102.159.4.128 | 102.159.4.129 | 102.159.4.254 | 102.159.4.255 | 126 |
| 3 | 102.159.5.0/25 | 102.159.5.0 | 102.159.5.1 | 102.159.5.126 | 102.159.5.127 | 126 |
| 4 | 102.159.5.128/25 | 102.159.5.128 | 102.159.5.129 | 102.159.5.254 | 102.159.5.255 | 126 |
Split 102.159.4.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.4.0/26 | 102.159.4.0 | 102.159.4.1 | 102.159.4.62 | 102.159.4.63 | 62 |
| 2 | 102.159.4.64/26 | 102.159.4.64 | 102.159.4.65 | 102.159.4.126 | 102.159.4.127 | 62 |
| 3 | 102.159.4.128/26 | 102.159.4.128 | 102.159.4.129 | 102.159.4.190 | 102.159.4.191 | 62 |
| 4 | 102.159.4.192/26 | 102.159.4.192 | 102.159.4.193 | 102.159.4.254 | 102.159.4.255 | 62 |
| 5 | 102.159.5.0/26 | 102.159.5.0 | 102.159.5.1 | 102.159.5.62 | 102.159.5.63 | 62 |
| 6 | 102.159.5.64/26 | 102.159.5.64 | 102.159.5.65 | 102.159.5.126 | 102.159.5.127 | 62 |
| 7 | 102.159.5.128/26 | 102.159.5.128 | 102.159.5.129 | 102.159.5.190 | 102.159.5.191 | 62 |
| 8 | 102.159.5.192/26 | 102.159.5.192 | 102.159.5.193 | 102.159.5.254 | 102.159.5.255 | 62 |
Split 102.159.4.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 102.159.4.0/27 | 102.159.4.0 | 102.159.4.1 | 102.159.4.30 | 102.159.4.31 | 30 |
| 2 | 102.159.4.32/27 | 102.159.4.32 | 102.159.4.33 | 102.159.4.62 | 102.159.4.63 | 30 |
| 3 | 102.159.4.64/27 | 102.159.4.64 | 102.159.4.65 | 102.159.4.94 | 102.159.4.95 | 30 |
| 4 | 102.159.4.96/27 | 102.159.4.96 | 102.159.4.97 | 102.159.4.126 | 102.159.4.127 | 30 |
| 5 | 102.159.4.128/27 | 102.159.4.128 | 102.159.4.129 | 102.159.4.158 | 102.159.4.159 | 30 |
| 6 | 102.159.4.160/27 | 102.159.4.160 | 102.159.4.161 | 102.159.4.190 | 102.159.4.191 | 30 |
| 7 | 102.159.4.192/27 | 102.159.4.192 | 102.159.4.193 | 102.159.4.222 | 102.159.4.223 | 30 |
| 8 | 102.159.4.224/27 | 102.159.4.224 | 102.159.4.225 | 102.159.4.254 | 102.159.4.255 | 30 |
| 9 | 102.159.5.0/27 | 102.159.5.0 | 102.159.5.1 | 102.159.5.30 | 102.159.5.31 | 30 |
| 10 | 102.159.5.32/27 | 102.159.5.32 | 102.159.5.33 | 102.159.5.62 | 102.159.5.63 | 30 |
| 11 | 102.159.5.64/27 | 102.159.5.64 | 102.159.5.65 | 102.159.5.94 | 102.159.5.95 | 30 |
| 12 | 102.159.5.96/27 | 102.159.5.96 | 102.159.5.97 | 102.159.5.126 | 102.159.5.127 | 30 |
| 13 | 102.159.5.128/27 | 102.159.5.128 | 102.159.5.129 | 102.159.5.158 | 102.159.5.159 | 30 |
| 14 | 102.159.5.160/27 | 102.159.5.160 | 102.159.5.161 | 102.159.5.190 | 102.159.5.191 | 30 |
| 15 | 102.159.5.192/27 | 102.159.5.192 | 102.159.5.193 | 102.159.5.222 | 102.159.5.223 | 30 |
| 16 | 102.159.5.224/27 | 102.159.5.224 | 102.159.5.225 | 102.159.5.254 | 102.159.5.255 | 30 |