178.66.23.0/24
PublicClass B — /24 prefix — 254 usable hosts
Network address — the base address of the block (178.66.23.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 178.66.23.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 254 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.0 is the dotted-decimal equivalent of /24. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 178.66.23.0/24 |
| Network Address | 178.66.23.0 |
| Broadcast Address | 178.66.23.255 |
| Subnet Mask | 255.255.255.0 |
| Wildcard Mask | 0.0.0.255 |
| Prefix Length | /24 |
| IP Address Class | Class B |
| Total IP Addresses | 256 |
| Usable Host Addresses | 254 |
| First Usable IP | 178.66.23.1 |
| Last Usable IP | 178.66.23.254 |
| Network (Hex) | 0xB2421700 |
| Broadcast (Hex) | 0xB24217FF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 24 bits (1s in the mask) identify the network. The remaining 8 bits identify hosts within the network.
Split into Equal Subnets
Split 178.66.23.0/24 into 2 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.66.23.0/25 | 178.66.23.0 | 178.66.23.1 | 178.66.23.126 | 178.66.23.127 | 126 |
| 2 | 178.66.23.128/25 | 178.66.23.128 | 178.66.23.129 | 178.66.23.254 | 178.66.23.255 | 126 |
Split 178.66.23.0/24 into 4 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.66.23.0/26 | 178.66.23.0 | 178.66.23.1 | 178.66.23.62 | 178.66.23.63 | 62 |
| 2 | 178.66.23.64/26 | 178.66.23.64 | 178.66.23.65 | 178.66.23.126 | 178.66.23.127 | 62 |
| 3 | 178.66.23.128/26 | 178.66.23.128 | 178.66.23.129 | 178.66.23.190 | 178.66.23.191 | 62 |
| 4 | 178.66.23.192/26 | 178.66.23.192 | 178.66.23.193 | 178.66.23.254 | 178.66.23.255 | 62 |
Split 178.66.23.0/24 into 8 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.66.23.0/27 | 178.66.23.0 | 178.66.23.1 | 178.66.23.30 | 178.66.23.31 | 30 |
| 2 | 178.66.23.32/27 | 178.66.23.32 | 178.66.23.33 | 178.66.23.62 | 178.66.23.63 | 30 |
| 3 | 178.66.23.64/27 | 178.66.23.64 | 178.66.23.65 | 178.66.23.94 | 178.66.23.95 | 30 |
| 4 | 178.66.23.96/27 | 178.66.23.96 | 178.66.23.97 | 178.66.23.126 | 178.66.23.127 | 30 |
| 5 | 178.66.23.128/27 | 178.66.23.128 | 178.66.23.129 | 178.66.23.158 | 178.66.23.159 | 30 |
| 6 | 178.66.23.160/27 | 178.66.23.160 | 178.66.23.161 | 178.66.23.190 | 178.66.23.191 | 30 |
| 7 | 178.66.23.192/27 | 178.66.23.192 | 178.66.23.193 | 178.66.23.222 | 178.66.23.223 | 30 |
| 8 | 178.66.23.224/27 | 178.66.23.224 | 178.66.23.225 | 178.66.23.254 | 178.66.23.255 | 30 |
Split 178.66.23.0/24 into 16 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.66.23.0/28 | 178.66.23.0 | 178.66.23.1 | 178.66.23.14 | 178.66.23.15 | 14 |
| 2 | 178.66.23.16/28 | 178.66.23.16 | 178.66.23.17 | 178.66.23.30 | 178.66.23.31 | 14 |
| 3 | 178.66.23.32/28 | 178.66.23.32 | 178.66.23.33 | 178.66.23.46 | 178.66.23.47 | 14 |
| 4 | 178.66.23.48/28 | 178.66.23.48 | 178.66.23.49 | 178.66.23.62 | 178.66.23.63 | 14 |
| 5 | 178.66.23.64/28 | 178.66.23.64 | 178.66.23.65 | 178.66.23.78 | 178.66.23.79 | 14 |
| 6 | 178.66.23.80/28 | 178.66.23.80 | 178.66.23.81 | 178.66.23.94 | 178.66.23.95 | 14 |
| 7 | 178.66.23.96/28 | 178.66.23.96 | 178.66.23.97 | 178.66.23.110 | 178.66.23.111 | 14 |
| 8 | 178.66.23.112/28 | 178.66.23.112 | 178.66.23.113 | 178.66.23.126 | 178.66.23.127 | 14 |
| 9 | 178.66.23.128/28 | 178.66.23.128 | 178.66.23.129 | 178.66.23.142 | 178.66.23.143 | 14 |
| 10 | 178.66.23.144/28 | 178.66.23.144 | 178.66.23.145 | 178.66.23.158 | 178.66.23.159 | 14 |
| 11 | 178.66.23.160/28 | 178.66.23.160 | 178.66.23.161 | 178.66.23.174 | 178.66.23.175 | 14 |
| 12 | 178.66.23.176/28 | 178.66.23.176 | 178.66.23.177 | 178.66.23.190 | 178.66.23.191 | 14 |
| 13 | 178.66.23.192/28 | 178.66.23.192 | 178.66.23.193 | 178.66.23.206 | 178.66.23.207 | 14 |
| 14 | 178.66.23.208/28 | 178.66.23.208 | 178.66.23.209 | 178.66.23.222 | 178.66.23.223 | 14 |
| 15 | 178.66.23.224/28 | 178.66.23.224 | 178.66.23.225 | 178.66.23.238 | 178.66.23.239 | 14 |
| 16 | 178.66.23.240/28 | 178.66.23.240 | 178.66.23.241 | 178.66.23.254 | 178.66.23.255 | 14 |
IP Address Sample
Showing first 16 of 256 total IPs.