239.182.128.0/19
Multicast RFC 5771Class D (Multicast) — /19 prefix — 8,190 usable hosts
Network address — the base address of the block (239.182.128.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 239.182.159.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 8,190 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.224.0 is the dotted-decimal equivalent of /19. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 239.182.128.0/19 |
| Network Address | 239.182.128.0 |
| Broadcast Address | 239.182.159.255 |
| Subnet Mask | 255.255.224.0 |
| Wildcard Mask | 0.0.31.255 |
| Prefix Length | /19 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 8,192 |
| Usable Host Addresses | 8,190 |
| First Usable IP | 239.182.128.1 |
| Last Usable IP | 239.182.159.254 |
| Network (Hex) | 0xEFB68000 |
| Broadcast (Hex) | 0xEFB69FFF |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
The first 19 bits (1s in the mask) identify the network. The remaining 13 bits identify hosts within the network.
Subnet Breakdown — splitting into /20
This /19 block can be divided into 2 /20 subnets.
| CIDR | Network | Broadcast | First Usable | Last Usable | Hosts |
|---|---|---|---|---|---|
| 239.182.128.0/20 | 239.182.128.0 | 239.182.143.255 | 239.182.128.1 | 239.182.143.254 | 4,094 |
| 239.182.144.0/20 | 239.182.144.0 | 239.182.159.255 | 239.182.144.1 | 239.182.159.254 | 4,094 |