What this means
The IEEE assigned the MA-L block 0018D4 to Unified Display Interface SIG. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:18:D4, it is Unified Display Interface SIG hardware.
Frequently Asked Questions
Who owns MAC prefix 0018D4?
0018D4 is registered to Unified Display Interface SIG in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Unified Display Interface SIG's block covers 16,777,216 addresses.
What devices use 0018D4?
Any network device with a MAC address starting 00:18:D4 was manufactured by or for Unified Display Interface SIG.