239.252.25.208/28
Multicast RFC 5771Class D (Multicast) — /28 prefix — 14 usable hosts
Network address — the base address of the block (239.252.25.208). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 239.252.25.223 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 14 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.240 is the dotted-decimal equivalent of /28. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 239.252.25.208/28 |
| Network Address | 239.252.25.208 |
| Broadcast Address | 239.252.25.223 |
| Subnet Mask | 255.255.255.240 |
| Wildcard Mask | 0.0.0.15 |
| Prefix Length | /28 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 16 |
| Usable Host Addresses | 14 |
| First Usable IP | 239.252.25.209 |
| Last Usable IP | 239.252.25.222 |
| Network (Hex) | 0xEFFC19D0 |
| Broadcast (Hex) | 0xEFFC19DF |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
The first 28 bits (1s in the mask) identify the network. The remaining 4 bits identify hosts within the network.
Split into Equal Subnets
Split 239.252.25.208/28 into 2 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 239.252.25.208/29 | 239.252.25.208 | 239.252.25.209 | 239.252.25.214 | 239.252.25.215 | 6 |
| 2 | 239.252.25.216/29 | 239.252.25.216 | 239.252.25.217 | 239.252.25.222 | 239.252.25.223 | 6 |
Split 239.252.25.208/28 into 4 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 239.252.25.208/30 | 239.252.25.208 | 239.252.25.209 | 239.252.25.210 | 239.252.25.211 | 2 |
| 2 | 239.252.25.212/30 | 239.252.25.212 | 239.252.25.213 | 239.252.25.214 | 239.252.25.215 | 2 |
| 3 | 239.252.25.216/30 | 239.252.25.216 | 239.252.25.217 | 239.252.25.218 | 239.252.25.219 | 2 |
| 4 | 239.252.25.220/30 | 239.252.25.220 | 239.252.25.221 | 239.252.25.222 | 239.252.25.223 | 2 |