171.239.221.128/27
PublicClass B — /27 prefix — 30 usable hosts
Network address — the base address of the block (171.239.221.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 171.239.221.159 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 | 171.239.221.128/27 |
| Network Address | 171.239.221.128 |
| Broadcast Address | 171.239.221.159 |
| Subnet Mask | 255.255.255.224 |
| Wildcard Mask | 0.0.0.31 |
| Prefix Length | /27 |
| IP Address Class | Class B |
| Total IP Addresses | 32 |
| Usable Host Addresses | 30 |
| First Usable IP | 171.239.221.129 |
| Last Usable IP | 171.239.221.158 |
| Network (Hex) | 0xABEFDD80 |
| Broadcast (Hex) | 0xABEFDD9F |
| 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 171.239.221.128/27 into 2 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.239.221.128/28 | 171.239.221.128 | 171.239.221.129 | 171.239.221.142 | 171.239.221.143 | 14 |
| 2 | 171.239.221.144/28 | 171.239.221.144 | 171.239.221.145 | 171.239.221.158 | 171.239.221.159 | 14 |
Split 171.239.221.128/27 into 4 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.239.221.128/29 | 171.239.221.128 | 171.239.221.129 | 171.239.221.134 | 171.239.221.135 | 6 |
| 2 | 171.239.221.136/29 | 171.239.221.136 | 171.239.221.137 | 171.239.221.142 | 171.239.221.143 | 6 |
| 3 | 171.239.221.144/29 | 171.239.221.144 | 171.239.221.145 | 171.239.221.150 | 171.239.221.151 | 6 |
| 4 | 171.239.221.152/29 | 171.239.221.152 | 171.239.221.153 | 171.239.221.158 | 171.239.221.159 | 6 |
Split 171.239.221.128/27 into 8 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 171.239.221.128/30 | 171.239.221.128 | 171.239.221.129 | 171.239.221.130 | 171.239.221.131 | 2 |
| 2 | 171.239.221.132/30 | 171.239.221.132 | 171.239.221.133 | 171.239.221.134 | 171.239.221.135 | 2 |
| 3 | 171.239.221.136/30 | 171.239.221.136 | 171.239.221.137 | 171.239.221.138 | 171.239.221.139 | 2 |
| 4 | 171.239.221.140/30 | 171.239.221.140 | 171.239.221.141 | 171.239.221.142 | 171.239.221.143 | 2 |
| 5 | 171.239.221.144/30 | 171.239.221.144 | 171.239.221.145 | 171.239.221.146 | 171.239.221.147 | 2 |
| 6 | 171.239.221.148/30 | 171.239.221.148 | 171.239.221.149 | 171.239.221.150 | 171.239.221.151 | 2 |
| 7 | 171.239.221.152/30 | 171.239.221.152 | 171.239.221.153 | 171.239.221.154 | 171.239.221.155 | 2 |
| 8 | 171.239.221.156/30 | 171.239.221.156 | 171.239.221.157 | 171.239.221.158 | 171.239.221.159 | 2 |
IP Address Sample
Showing first 16 of 32 total IPs.