81.252.254.224/27
PublicClass A — /27 prefix — 30 usable hosts
Network address — the base address of the block (81.252.254.224). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 81.252.254.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 81.252.254.224/27 |
| Network Address | 81.252.254.224 |
| Broadcast Address | 81.252.254.255 |
| Subnet Mask | 255.255.255.224 |
| Wildcard Mask | 0.0.0.31 |
| Prefix Length | /27 |
| IP Address Class | Class A |
| Total IP Addresses | 32 |
| Usable Host Addresses | 30 |
| First Usable IP | 81.252.254.225 |
| Last Usable IP | 81.252.254.254 |
| Network (Hex) | 0x51FCFEE0 |
| Broadcast (Hex) | 0x51FCFEFF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.
Split into Equal Subnets
Split 81.252.254.224/27 into 2 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 81.252.254.224/28 | 81.252.254.224 | 81.252.254.225 | 81.252.254.238 | 81.252.254.239 | 14 |
| 2 | 81.252.254.240/28 | 81.252.254.240 | 81.252.254.241 | 81.252.254.254 | 81.252.254.255 | 14 |
Split 81.252.254.224/27 into 4 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 81.252.254.224/29 | 81.252.254.224 | 81.252.254.225 | 81.252.254.230 | 81.252.254.231 | 6 |
| 2 | 81.252.254.232/29 | 81.252.254.232 | 81.252.254.233 | 81.252.254.238 | 81.252.254.239 | 6 |
| 3 | 81.252.254.240/29 | 81.252.254.240 | 81.252.254.241 | 81.252.254.246 | 81.252.254.247 | 6 |
| 4 | 81.252.254.248/29 | 81.252.254.248 | 81.252.254.249 | 81.252.254.254 | 81.252.254.255 | 6 |
Split 81.252.254.224/27 into 8 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 81.252.254.224/30 | 81.252.254.224 | 81.252.254.225 | 81.252.254.226 | 81.252.254.227 | 2 |
| 2 | 81.252.254.228/30 | 81.252.254.228 | 81.252.254.229 | 81.252.254.230 | 81.252.254.231 | 2 |
| 3 | 81.252.254.232/30 | 81.252.254.232 | 81.252.254.233 | 81.252.254.234 | 81.252.254.235 | 2 |
| 4 | 81.252.254.236/30 | 81.252.254.236 | 81.252.254.237 | 81.252.254.238 | 81.252.254.239 | 2 |
| 5 | 81.252.254.240/30 | 81.252.254.240 | 81.252.254.241 | 81.252.254.242 | 81.252.254.243 | 2 |
| 6 | 81.252.254.244/30 | 81.252.254.244 | 81.252.254.245 | 81.252.254.246 | 81.252.254.247 | 2 |
| 7 | 81.252.254.248/30 | 81.252.254.248 | 81.252.254.249 | 81.252.254.250 | 81.252.254.251 | 2 |
| 8 | 81.252.254.252/30 | 81.252.254.252 | 81.252.254.253 | 81.252.254.254 | 81.252.254.255 | 2 |
IP Address Sample
Showing first 16 of 32 total IPs.