178.0.0.0/10
PublicClass B — /10 prefix — 4,194,302 usable hosts
Network address — the base address of the block (178.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 178.63.255.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 4,194,302 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.192.0.0 is the dotted-decimal equivalent of /10. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 178.0.0.0/10 |
| Network Address | 178.0.0.0 |
| Broadcast Address | 178.63.255.255 |
| Subnet Mask | 255.192.0.0 |
| Wildcard Mask | 0.63.255.255 |
| Prefix Length | /10 |
| IP Address Class | Class B |
| Total IP Addresses | 4,194,304 |
| Usable Host Addresses | 4,194,302 |
| First Usable IP | 178.0.0.1 |
| Last Usable IP | 178.63.255.254 |
| Network (Hex) | 0xB2000000 |
| Broadcast (Hex) | 0xB23FFFFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 10 bits (1s in the mask) identify the network. The remaining 22 bits identify hosts within the network.
Split into Equal Subnets
Split 178.0.0.0/10 into 2 equal /11 subnets (2,097,150 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.0.0.0/11 | 178.0.0.0 | 178.0.0.1 | 178.31.255.254 | 178.31.255.255 | 2,097,150 |
| 2 | 178.32.0.0/11 | 178.32.0.0 | 178.32.0.1 | 178.63.255.254 | 178.63.255.255 | 2,097,150 |
Split 178.0.0.0/10 into 4 equal /12 subnets (1,048,574 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.0.0.0/12 | 178.0.0.0 | 178.0.0.1 | 178.15.255.254 | 178.15.255.255 | 1,048,574 |
| 2 | 178.16.0.0/12 | 178.16.0.0 | 178.16.0.1 | 178.31.255.254 | 178.31.255.255 | 1,048,574 |
| 3 | 178.32.0.0/12 | 178.32.0.0 | 178.32.0.1 | 178.47.255.254 | 178.47.255.255 | 1,048,574 |
| 4 | 178.48.0.0/12 | 178.48.0.0 | 178.48.0.1 | 178.63.255.254 | 178.63.255.255 | 1,048,574 |
Split 178.0.0.0/10 into 8 equal /13 subnets (524,286 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.0.0.0/13 | 178.0.0.0 | 178.0.0.1 | 178.7.255.254 | 178.7.255.255 | 524,286 |
| 2 | 178.8.0.0/13 | 178.8.0.0 | 178.8.0.1 | 178.15.255.254 | 178.15.255.255 | 524,286 |
| 3 | 178.16.0.0/13 | 178.16.0.0 | 178.16.0.1 | 178.23.255.254 | 178.23.255.255 | 524,286 |
| 4 | 178.24.0.0/13 | 178.24.0.0 | 178.24.0.1 | 178.31.255.254 | 178.31.255.255 | 524,286 |
| 5 | 178.32.0.0/13 | 178.32.0.0 | 178.32.0.1 | 178.39.255.254 | 178.39.255.255 | 524,286 |
| 6 | 178.40.0.0/13 | 178.40.0.0 | 178.40.0.1 | 178.47.255.254 | 178.47.255.255 | 524,286 |
| 7 | 178.48.0.0/13 | 178.48.0.0 | 178.48.0.1 | 178.55.255.254 | 178.55.255.255 | 524,286 |
| 8 | 178.56.0.0/13 | 178.56.0.0 | 178.56.0.1 | 178.63.255.254 | 178.63.255.255 | 524,286 |
Split 178.0.0.0/10 into 16 equal /14 subnets (262,142 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.0.0.0/14 | 178.0.0.0 | 178.0.0.1 | 178.3.255.254 | 178.3.255.255 | 262,142 |
| 2 | 178.4.0.0/14 | 178.4.0.0 | 178.4.0.1 | 178.7.255.254 | 178.7.255.255 | 262,142 |
| 3 | 178.8.0.0/14 | 178.8.0.0 | 178.8.0.1 | 178.11.255.254 | 178.11.255.255 | 262,142 |
| 4 | 178.12.0.0/14 | 178.12.0.0 | 178.12.0.1 | 178.15.255.254 | 178.15.255.255 | 262,142 |
| 5 | 178.16.0.0/14 | 178.16.0.0 | 178.16.0.1 | 178.19.255.254 | 178.19.255.255 | 262,142 |
| 6 | 178.20.0.0/14 | 178.20.0.0 | 178.20.0.1 | 178.23.255.254 | 178.23.255.255 | 262,142 |
| 7 | 178.24.0.0/14 | 178.24.0.0 | 178.24.0.1 | 178.27.255.254 | 178.27.255.255 | 262,142 |
| 8 | 178.28.0.0/14 | 178.28.0.0 | 178.28.0.1 | 178.31.255.254 | 178.31.255.255 | 262,142 |
| 9 | 178.32.0.0/14 | 178.32.0.0 | 178.32.0.1 | 178.35.255.254 | 178.35.255.255 | 262,142 |
| 10 | 178.36.0.0/14 | 178.36.0.0 | 178.36.0.1 | 178.39.255.254 | 178.39.255.255 | 262,142 |
| 11 | 178.40.0.0/14 | 178.40.0.0 | 178.40.0.1 | 178.43.255.254 | 178.43.255.255 | 262,142 |
| 12 | 178.44.0.0/14 | 178.44.0.0 | 178.44.0.1 | 178.47.255.254 | 178.47.255.255 | 262,142 |
| 13 | 178.48.0.0/14 | 178.48.0.0 | 178.48.0.1 | 178.51.255.254 | 178.51.255.255 | 262,142 |
| 14 | 178.52.0.0/14 | 178.52.0.0 | 178.52.0.1 | 178.55.255.254 | 178.55.255.255 | 262,142 |
| 15 | 178.56.0.0/14 | 178.56.0.0 | 178.56.0.1 | 178.59.255.254 | 178.59.255.255 | 262,142 |
| 16 | 178.60.0.0/14 | 178.60.0.0 | 178.60.0.1 | 178.63.255.254 | 178.63.255.255 | 262,142 |