230.128.182.128/25
Multicast RFC 5771Class D (Multicast) — /25 prefix — 126 usable hosts
Network address — the base address of the block (230.128.182.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 230.128.182.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 230.128.182.128/25 |
| Network Address | 230.128.182.128 |
| Broadcast Address | 230.128.182.255 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 230.128.182.129 |
| Last Usable IP | 230.128.182.254 |
| Network (Hex) | 0xE680B680 |
| Broadcast (Hex) | 0xE680B6FF |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 230.128.182.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.128.182.128/26 | 230.128.182.128 | 230.128.182.129 | 230.128.182.190 | 230.128.182.191 | 62 |
| 2 | 230.128.182.192/26 | 230.128.182.192 | 230.128.182.193 | 230.128.182.254 | 230.128.182.255 | 62 |
Split 230.128.182.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.128.182.128/27 | 230.128.182.128 | 230.128.182.129 | 230.128.182.158 | 230.128.182.159 | 30 |
| 2 | 230.128.182.160/27 | 230.128.182.160 | 230.128.182.161 | 230.128.182.190 | 230.128.182.191 | 30 |
| 3 | 230.128.182.192/27 | 230.128.182.192 | 230.128.182.193 | 230.128.182.222 | 230.128.182.223 | 30 |
| 4 | 230.128.182.224/27 | 230.128.182.224 | 230.128.182.225 | 230.128.182.254 | 230.128.182.255 | 30 |
Split 230.128.182.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.128.182.128/28 | 230.128.182.128 | 230.128.182.129 | 230.128.182.142 | 230.128.182.143 | 14 |
| 2 | 230.128.182.144/28 | 230.128.182.144 | 230.128.182.145 | 230.128.182.158 | 230.128.182.159 | 14 |
| 3 | 230.128.182.160/28 | 230.128.182.160 | 230.128.182.161 | 230.128.182.174 | 230.128.182.175 | 14 |
| 4 | 230.128.182.176/28 | 230.128.182.176 | 230.128.182.177 | 230.128.182.190 | 230.128.182.191 | 14 |
| 5 | 230.128.182.192/28 | 230.128.182.192 | 230.128.182.193 | 230.128.182.206 | 230.128.182.207 | 14 |
| 6 | 230.128.182.208/28 | 230.128.182.208 | 230.128.182.209 | 230.128.182.222 | 230.128.182.223 | 14 |
| 7 | 230.128.182.224/28 | 230.128.182.224 | 230.128.182.225 | 230.128.182.238 | 230.128.182.239 | 14 |
| 8 | 230.128.182.240/28 | 230.128.182.240 | 230.128.182.241 | 230.128.182.254 | 230.128.182.255 | 14 |
Split 230.128.182.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.128.182.128/29 | 230.128.182.128 | 230.128.182.129 | 230.128.182.134 | 230.128.182.135 | 6 |
| 2 | 230.128.182.136/29 | 230.128.182.136 | 230.128.182.137 | 230.128.182.142 | 230.128.182.143 | 6 |
| 3 | 230.128.182.144/29 | 230.128.182.144 | 230.128.182.145 | 230.128.182.150 | 230.128.182.151 | 6 |
| 4 | 230.128.182.152/29 | 230.128.182.152 | 230.128.182.153 | 230.128.182.158 | 230.128.182.159 | 6 |
| 5 | 230.128.182.160/29 | 230.128.182.160 | 230.128.182.161 | 230.128.182.166 | 230.128.182.167 | 6 |
| 6 | 230.128.182.168/29 | 230.128.182.168 | 230.128.182.169 | 230.128.182.174 | 230.128.182.175 | 6 |
| 7 | 230.128.182.176/29 | 230.128.182.176 | 230.128.182.177 | 230.128.182.182 | 230.128.182.183 | 6 |
| 8 | 230.128.182.184/29 | 230.128.182.184 | 230.128.182.185 | 230.128.182.190 | 230.128.182.191 | 6 |
| 9 | 230.128.182.192/29 | 230.128.182.192 | 230.128.182.193 | 230.128.182.198 | 230.128.182.199 | 6 |
| 10 | 230.128.182.200/29 | 230.128.182.200 | 230.128.182.201 | 230.128.182.206 | 230.128.182.207 | 6 |
| 11 | 230.128.182.208/29 | 230.128.182.208 | 230.128.182.209 | 230.128.182.214 | 230.128.182.215 | 6 |
| 12 | 230.128.182.216/29 | 230.128.182.216 | 230.128.182.217 | 230.128.182.222 | 230.128.182.223 | 6 |
| 13 | 230.128.182.224/29 | 230.128.182.224 | 230.128.182.225 | 230.128.182.230 | 230.128.182.231 | 6 |
| 14 | 230.128.182.232/29 | 230.128.182.232 | 230.128.182.233 | 230.128.182.238 | 230.128.182.239 | 6 |
| 15 | 230.128.182.240/29 | 230.128.182.240 | 230.128.182.241 | 230.128.182.246 | 230.128.182.247 | 6 |
| 16 | 230.128.182.248/29 | 230.128.182.248 | 230.128.182.249 | 230.128.182.254 | 230.128.182.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.