230.158.242.128/25
Multicast RFC 5771Class D (Multicast) — /25 prefix — 126 usable hosts
Network address — the base address of the block (230.158.242.128). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 230.158.242.255 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 | 230.158.242.128/25 |
| Network Address | 230.158.242.128 |
| Broadcast Address | 230.158.242.255 |
| 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 | 230.158.242.129 |
| Last Usable IP | 230.158.242.254 |
| Network (Hex) | 0xE69EF280 |
| Broadcast (Hex) | 0xE69EF2FF |
| 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 230.158.242.128/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.158.242.128/26 | 230.158.242.128 | 230.158.242.129 | 230.158.242.190 | 230.158.242.191 | 62 |
| 2 | 230.158.242.192/26 | 230.158.242.192 | 230.158.242.193 | 230.158.242.254 | 230.158.242.255 | 62 |
Split 230.158.242.128/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.158.242.128/27 | 230.158.242.128 | 230.158.242.129 | 230.158.242.158 | 230.158.242.159 | 30 |
| 2 | 230.158.242.160/27 | 230.158.242.160 | 230.158.242.161 | 230.158.242.190 | 230.158.242.191 | 30 |
| 3 | 230.158.242.192/27 | 230.158.242.192 | 230.158.242.193 | 230.158.242.222 | 230.158.242.223 | 30 |
| 4 | 230.158.242.224/27 | 230.158.242.224 | 230.158.242.225 | 230.158.242.254 | 230.158.242.255 | 30 |
Split 230.158.242.128/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.158.242.128/28 | 230.158.242.128 | 230.158.242.129 | 230.158.242.142 | 230.158.242.143 | 14 |
| 2 | 230.158.242.144/28 | 230.158.242.144 | 230.158.242.145 | 230.158.242.158 | 230.158.242.159 | 14 |
| 3 | 230.158.242.160/28 | 230.158.242.160 | 230.158.242.161 | 230.158.242.174 | 230.158.242.175 | 14 |
| 4 | 230.158.242.176/28 | 230.158.242.176 | 230.158.242.177 | 230.158.242.190 | 230.158.242.191 | 14 |
| 5 | 230.158.242.192/28 | 230.158.242.192 | 230.158.242.193 | 230.158.242.206 | 230.158.242.207 | 14 |
| 6 | 230.158.242.208/28 | 230.158.242.208 | 230.158.242.209 | 230.158.242.222 | 230.158.242.223 | 14 |
| 7 | 230.158.242.224/28 | 230.158.242.224 | 230.158.242.225 | 230.158.242.238 | 230.158.242.239 | 14 |
| 8 | 230.158.242.240/28 | 230.158.242.240 | 230.158.242.241 | 230.158.242.254 | 230.158.242.255 | 14 |
Split 230.158.242.128/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 230.158.242.128/29 | 230.158.242.128 | 230.158.242.129 | 230.158.242.134 | 230.158.242.135 | 6 |
| 2 | 230.158.242.136/29 | 230.158.242.136 | 230.158.242.137 | 230.158.242.142 | 230.158.242.143 | 6 |
| 3 | 230.158.242.144/29 | 230.158.242.144 | 230.158.242.145 | 230.158.242.150 | 230.158.242.151 | 6 |
| 4 | 230.158.242.152/29 | 230.158.242.152 | 230.158.242.153 | 230.158.242.158 | 230.158.242.159 | 6 |
| 5 | 230.158.242.160/29 | 230.158.242.160 | 230.158.242.161 | 230.158.242.166 | 230.158.242.167 | 6 |
| 6 | 230.158.242.168/29 | 230.158.242.168 | 230.158.242.169 | 230.158.242.174 | 230.158.242.175 | 6 |
| 7 | 230.158.242.176/29 | 230.158.242.176 | 230.158.242.177 | 230.158.242.182 | 230.158.242.183 | 6 |
| 8 | 230.158.242.184/29 | 230.158.242.184 | 230.158.242.185 | 230.158.242.190 | 230.158.242.191 | 6 |
| 9 | 230.158.242.192/29 | 230.158.242.192 | 230.158.242.193 | 230.158.242.198 | 230.158.242.199 | 6 |
| 10 | 230.158.242.200/29 | 230.158.242.200 | 230.158.242.201 | 230.158.242.206 | 230.158.242.207 | 6 |
| 11 | 230.158.242.208/29 | 230.158.242.208 | 230.158.242.209 | 230.158.242.214 | 230.158.242.215 | 6 |
| 12 | 230.158.242.216/29 | 230.158.242.216 | 230.158.242.217 | 230.158.242.222 | 230.158.242.223 | 6 |
| 13 | 230.158.242.224/29 | 230.158.242.224 | 230.158.242.225 | 230.158.242.230 | 230.158.242.231 | 6 |
| 14 | 230.158.242.232/29 | 230.158.242.232 | 230.158.242.233 | 230.158.242.238 | 230.158.242.239 | 6 |
| 15 | 230.158.242.240/29 | 230.158.242.240 | 230.158.242.241 | 230.158.242.246 | 230.158.242.247 | 6 |
| 16 | 230.158.242.248/29 | 230.158.242.248 | 230.158.242.249 | 230.158.242.254 | 230.158.242.255 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.