What this means
The IEEE assigned the MA-L block 384B5B to ZTRON TECHNOLOGY LIMITED. 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 38:4B:5B, it is ZTRON TECHNOLOGY LIMITED hardware.
Frequently Asked Questions
Who owns MAC prefix 384B5B?
384B5B is registered to ZTRON TECHNOLOGY LIMITED 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. ZTRON TECHNOLOGY LIMITED's block covers 16,777,216 addresses.
What devices use 384B5B?
Any network device with a MAC address starting 38:4B:5B was manufactured by or for ZTRON TECHNOLOGY LIMITED.