128.191.80.160/27
PublicClass B — /27 prefix — 30 usable hosts
Network address — the base address of the block (128.191.80.160). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 128.191.80.191 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 | 128.191.80.160/27 |
| Network Address | 128.191.80.160 |
| Broadcast Address | 128.191.80.191 |
| 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 | 128.191.80.161 |
| Last Usable IP | 128.191.80.190 |
| Network (Hex) | 0x80BF50A0 |
| Broadcast (Hex) | 0x80BF50BF |
| 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 128.191.80.160/27 into 2 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.191.80.160/28 | 128.191.80.160 | 128.191.80.161 | 128.191.80.174 | 128.191.80.175 | 14 |
| 2 | 128.191.80.176/28 | 128.191.80.176 | 128.191.80.177 | 128.191.80.190 | 128.191.80.191 | 14 |
Split 128.191.80.160/27 into 4 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.191.80.160/29 | 128.191.80.160 | 128.191.80.161 | 128.191.80.166 | 128.191.80.167 | 6 |
| 2 | 128.191.80.168/29 | 128.191.80.168 | 128.191.80.169 | 128.191.80.174 | 128.191.80.175 | 6 |
| 3 | 128.191.80.176/29 | 128.191.80.176 | 128.191.80.177 | 128.191.80.182 | 128.191.80.183 | 6 |
| 4 | 128.191.80.184/29 | 128.191.80.184 | 128.191.80.185 | 128.191.80.190 | 128.191.80.191 | 6 |
Split 128.191.80.160/27 into 8 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 128.191.80.160/30 | 128.191.80.160 | 128.191.80.161 | 128.191.80.162 | 128.191.80.163 | 2 |
| 2 | 128.191.80.164/30 | 128.191.80.164 | 128.191.80.165 | 128.191.80.166 | 128.191.80.167 | 2 |
| 3 | 128.191.80.168/30 | 128.191.80.168 | 128.191.80.169 | 128.191.80.170 | 128.191.80.171 | 2 |
| 4 | 128.191.80.172/30 | 128.191.80.172 | 128.191.80.173 | 128.191.80.174 | 128.191.80.175 | 2 |
| 5 | 128.191.80.176/30 | 128.191.80.176 | 128.191.80.177 | 128.191.80.178 | 128.191.80.179 | 2 |
| 6 | 128.191.80.180/30 | 128.191.80.180 | 128.191.80.181 | 128.191.80.182 | 128.191.80.183 | 2 |
| 7 | 128.191.80.184/30 | 128.191.80.184 | 128.191.80.185 | 128.191.80.186 | 128.191.80.187 | 2 |
| 8 | 128.191.80.188/30 | 128.191.80.188 | 128.191.80.189 | 128.191.80.190 | 128.191.80.191 | 2 |
IP Address Sample
Showing first 16 of 32 total IPs.