224.72.239.188/30
Multicast RFC 5771Class D (Multicast) — /30 prefix — 2 usable hosts
Network Address
224.72.239.188
Broadcast Address
224.72.239.191
Subnet Mask
255.255.255.252
Usable Hosts
2
First Usable IP
224.72.239.189
Last Usable IP
224.72.239.190
Total IPs
4
Prefix Length
Network address — the base address of the block (224.72.239.188). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 224.72.239.191 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 2 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.252 is the dotted-decimal equivalent of /30. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 224.72.239.188/30 |
| Network Address | 224.72.239.188 |
| Broadcast Address | 224.72.239.191 |
| Subnet Mask | 255.255.255.252 |
| Wildcard Mask | 0.0.0.3 |
| Prefix Length | /30 |
| IP Address Class | Class D (Multicast) |
| Total IP Addresses | 4 |
| Usable Host Addresses | 2 |
| First Usable IP | 224.72.239.189 |
| Last Usable IP | 224.72.239.190 |
| Network (Hex) | 0xE048EFBC |
| Broadcast (Hex) | 0xE048EFBF |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
Network Address
11100000.01001000.11101111
11100000.01001000.11101111.10111100
Subnet Mask
11111111.11111111.11111111.11111100
The first 30 bits (1s in the mask) identify the network. The remaining 2 bits identify hosts within the network.
All 4 IP Addresses in this Range
224.72.239.188
net
224.72.239.189
224.72.239.190
224.72.239.191
bcast
/30 Subnet Reference
Total IPs
4
Usable Hosts
2
Subnet Mask
255.255.255.252
Wildcard
0.0.0.3