What this means
The IEEE assigned the MA-L block 0012A3 to Trust International B.V.. 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 00:12:A3, it is Trust International B.V. hardware.
Frequently Asked Questions
Who owns MAC prefix 0012A3?
0012A3 is registered to Trust International B.V. 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. Trust International B.V.'s block covers 16,777,216 addresses.
What devices use 0012A3?
Any network device with a MAC address starting 00:12:A3 was manufactured by or for Trust International B.V..