239.2.31.184/30
Multicast RFC 5771Class D (Multicast) — /30 prefix — 2 usable hosts
Network Address
239.2.31.184
Broadcast Address
239.2.31.187
Subnet Mask
255.255.255.252
Usable Hosts
2
First Usable IP
239.2.31.185
Last Usable IP
239.2.31.186
Total IPs
4
Prefix Length
Network address — the base address of the block (239.2.31.184). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 239.2.31.187 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 | 239.2.31.184/30 |
| Network Address | 239.2.31.184 |
| Broadcast Address | 239.2.31.187 |
| 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 | 239.2.31.185 |
| Last Usable IP | 239.2.31.186 |
| Network (Hex) | 0xEF021FB8 |
| Broadcast (Hex) | 0xEF021FBB |
| Governing RFC | RFC 5771 |
| Address Type | Multicast |
Binary Representation
Network Address
11101111.00000010.00011111
11101111.00000010.00011111.10111000
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
239.2.31.184
net
239.2.31.185
239.2.31.186
239.2.31.187
bcast
/30 Subnet Reference
Total IPs
4
Usable Hosts
2
Subnet Mask
255.255.255.252
Wildcard
0.0.0.3