178.21.173.192/26
PublicClass B — /26 prefix — 62 usable hosts
Network address — the base address of the block (178.21.173.192). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 178.21.173.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 178.21.173.192/26 |
| Network Address | 178.21.173.192 |
| Broadcast Address | 178.21.173.255 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class B |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 178.21.173.193 |
| Last Usable IP | 178.21.173.254 |
| Network (Hex) | 0xB215ADC0 |
| Broadcast (Hex) | 0xB215ADFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 178.21.173.192/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.21.173.192/27 | 178.21.173.192 | 178.21.173.193 | 178.21.173.222 | 178.21.173.223 | 30 |
| 2 | 178.21.173.224/27 | 178.21.173.224 | 178.21.173.225 | 178.21.173.254 | 178.21.173.255 | 30 |
Split 178.21.173.192/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.21.173.192/28 | 178.21.173.192 | 178.21.173.193 | 178.21.173.206 | 178.21.173.207 | 14 |
| 2 | 178.21.173.208/28 | 178.21.173.208 | 178.21.173.209 | 178.21.173.222 | 178.21.173.223 | 14 |
| 3 | 178.21.173.224/28 | 178.21.173.224 | 178.21.173.225 | 178.21.173.238 | 178.21.173.239 | 14 |
| 4 | 178.21.173.240/28 | 178.21.173.240 | 178.21.173.241 | 178.21.173.254 | 178.21.173.255 | 14 |
Split 178.21.173.192/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.21.173.192/29 | 178.21.173.192 | 178.21.173.193 | 178.21.173.198 | 178.21.173.199 | 6 |
| 2 | 178.21.173.200/29 | 178.21.173.200 | 178.21.173.201 | 178.21.173.206 | 178.21.173.207 | 6 |
| 3 | 178.21.173.208/29 | 178.21.173.208 | 178.21.173.209 | 178.21.173.214 | 178.21.173.215 | 6 |
| 4 | 178.21.173.216/29 | 178.21.173.216 | 178.21.173.217 | 178.21.173.222 | 178.21.173.223 | 6 |
| 5 | 178.21.173.224/29 | 178.21.173.224 | 178.21.173.225 | 178.21.173.230 | 178.21.173.231 | 6 |
| 6 | 178.21.173.232/29 | 178.21.173.232 | 178.21.173.233 | 178.21.173.238 | 178.21.173.239 | 6 |
| 7 | 178.21.173.240/29 | 178.21.173.240 | 178.21.173.241 | 178.21.173.246 | 178.21.173.247 | 6 |
| 8 | 178.21.173.248/29 | 178.21.173.248 | 178.21.173.249 | 178.21.173.254 | 178.21.173.255 | 6 |
Split 178.21.173.192/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 178.21.173.192/30 | 178.21.173.192 | 178.21.173.193 | 178.21.173.194 | 178.21.173.195 | 2 |
| 2 | 178.21.173.196/30 | 178.21.173.196 | 178.21.173.197 | 178.21.173.198 | 178.21.173.199 | 2 |
| 3 | 178.21.173.200/30 | 178.21.173.200 | 178.21.173.201 | 178.21.173.202 | 178.21.173.203 | 2 |
| 4 | 178.21.173.204/30 | 178.21.173.204 | 178.21.173.205 | 178.21.173.206 | 178.21.173.207 | 2 |
| 5 | 178.21.173.208/30 | 178.21.173.208 | 178.21.173.209 | 178.21.173.210 | 178.21.173.211 | 2 |
| 6 | 178.21.173.212/30 | 178.21.173.212 | 178.21.173.213 | 178.21.173.214 | 178.21.173.215 | 2 |
| 7 | 178.21.173.216/30 | 178.21.173.216 | 178.21.173.217 | 178.21.173.218 | 178.21.173.219 | 2 |
| 8 | 178.21.173.220/30 | 178.21.173.220 | 178.21.173.221 | 178.21.173.222 | 178.21.173.223 | 2 |
| 9 | 178.21.173.224/30 | 178.21.173.224 | 178.21.173.225 | 178.21.173.226 | 178.21.173.227 | 2 |
| 10 | 178.21.173.228/30 | 178.21.173.228 | 178.21.173.229 | 178.21.173.230 | 178.21.173.231 | 2 |
| 11 | 178.21.173.232/30 | 178.21.173.232 | 178.21.173.233 | 178.21.173.234 | 178.21.173.235 | 2 |
| 12 | 178.21.173.236/30 | 178.21.173.236 | 178.21.173.237 | 178.21.173.238 | 178.21.173.239 | 2 |
| 13 | 178.21.173.240/30 | 178.21.173.240 | 178.21.173.241 | 178.21.173.242 | 178.21.173.243 | 2 |
| 14 | 178.21.173.244/30 | 178.21.173.244 | 178.21.173.245 | 178.21.173.246 | 178.21.173.247 | 2 |
| 15 | 178.21.173.248/30 | 178.21.173.248 | 178.21.173.249 | 178.21.173.250 | 178.21.173.251 | 2 |
| 16 | 178.21.173.252/30 | 178.21.173.252 | 178.21.173.253 | 178.21.173.254 | 178.21.173.255 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.