140.4.210.0/23
PublicClass B — /23 prefix — 510 usable hosts
Network address — the base address of the block (140.4.210.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 140.4.211.255 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 | 140.4.210.0/23 |
| Network Address | 140.4.210.0 |
| Broadcast Address | 140.4.211.255 |
| 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 | 140.4.210.1 |
| Last Usable IP | 140.4.211.254 |
| Network (Hex) | 0x8C04D200 |
| Broadcast (Hex) | 0x8C04D3FF |
| 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 140.4.210.0/23 into 2 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 140.4.210.0/24 | 140.4.210.0 | 140.4.210.1 | 140.4.210.254 | 140.4.210.255 | 254 |
| 2 | 140.4.211.0/24 | 140.4.211.0 | 140.4.211.1 | 140.4.211.254 | 140.4.211.255 | 254 |
Split 140.4.210.0/23 into 4 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 140.4.210.0/25 | 140.4.210.0 | 140.4.210.1 | 140.4.210.126 | 140.4.210.127 | 126 |
| 2 | 140.4.210.128/25 | 140.4.210.128 | 140.4.210.129 | 140.4.210.254 | 140.4.210.255 | 126 |
| 3 | 140.4.211.0/25 | 140.4.211.0 | 140.4.211.1 | 140.4.211.126 | 140.4.211.127 | 126 |
| 4 | 140.4.211.128/25 | 140.4.211.128 | 140.4.211.129 | 140.4.211.254 | 140.4.211.255 | 126 |
Split 140.4.210.0/23 into 8 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 140.4.210.0/26 | 140.4.210.0 | 140.4.210.1 | 140.4.210.62 | 140.4.210.63 | 62 |
| 2 | 140.4.210.64/26 | 140.4.210.64 | 140.4.210.65 | 140.4.210.126 | 140.4.210.127 | 62 |
| 3 | 140.4.210.128/26 | 140.4.210.128 | 140.4.210.129 | 140.4.210.190 | 140.4.210.191 | 62 |
| 4 | 140.4.210.192/26 | 140.4.210.192 | 140.4.210.193 | 140.4.210.254 | 140.4.210.255 | 62 |
| 5 | 140.4.211.0/26 | 140.4.211.0 | 140.4.211.1 | 140.4.211.62 | 140.4.211.63 | 62 |
| 6 | 140.4.211.64/26 | 140.4.211.64 | 140.4.211.65 | 140.4.211.126 | 140.4.211.127 | 62 |
| 7 | 140.4.211.128/26 | 140.4.211.128 | 140.4.211.129 | 140.4.211.190 | 140.4.211.191 | 62 |
| 8 | 140.4.211.192/26 | 140.4.211.192 | 140.4.211.193 | 140.4.211.254 | 140.4.211.255 | 62 |
Split 140.4.210.0/23 into 16 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 140.4.210.0/27 | 140.4.210.0 | 140.4.210.1 | 140.4.210.30 | 140.4.210.31 | 30 |
| 2 | 140.4.210.32/27 | 140.4.210.32 | 140.4.210.33 | 140.4.210.62 | 140.4.210.63 | 30 |
| 3 | 140.4.210.64/27 | 140.4.210.64 | 140.4.210.65 | 140.4.210.94 | 140.4.210.95 | 30 |
| 4 | 140.4.210.96/27 | 140.4.210.96 | 140.4.210.97 | 140.4.210.126 | 140.4.210.127 | 30 |
| 5 | 140.4.210.128/27 | 140.4.210.128 | 140.4.210.129 | 140.4.210.158 | 140.4.210.159 | 30 |
| 6 | 140.4.210.160/27 | 140.4.210.160 | 140.4.210.161 | 140.4.210.190 | 140.4.210.191 | 30 |
| 7 | 140.4.210.192/27 | 140.4.210.192 | 140.4.210.193 | 140.4.210.222 | 140.4.210.223 | 30 |
| 8 | 140.4.210.224/27 | 140.4.210.224 | 140.4.210.225 | 140.4.210.254 | 140.4.210.255 | 30 |
| 9 | 140.4.211.0/27 | 140.4.211.0 | 140.4.211.1 | 140.4.211.30 | 140.4.211.31 | 30 |
| 10 | 140.4.211.32/27 | 140.4.211.32 | 140.4.211.33 | 140.4.211.62 | 140.4.211.63 | 30 |
| 11 | 140.4.211.64/27 | 140.4.211.64 | 140.4.211.65 | 140.4.211.94 | 140.4.211.95 | 30 |
| 12 | 140.4.211.96/27 | 140.4.211.96 | 140.4.211.97 | 140.4.211.126 | 140.4.211.127 | 30 |
| 13 | 140.4.211.128/27 | 140.4.211.128 | 140.4.211.129 | 140.4.211.158 | 140.4.211.159 | 30 |
| 14 | 140.4.211.160/27 | 140.4.211.160 | 140.4.211.161 | 140.4.211.190 | 140.4.211.191 | 30 |
| 15 | 140.4.211.192/27 | 140.4.211.192 | 140.4.211.193 | 140.4.211.222 | 140.4.211.223 | 30 |
| 16 | 140.4.211.224/27 | 140.4.211.224 | 140.4.211.225 | 140.4.211.254 | 140.4.211.255 | 30 |