What this means
The IEEE assigned the MA-L block 28BAB9 to ACME LIGHTING. 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 28:BA:B9, it is ACME LIGHTING hardware.
Frequently Asked Questions
Who owns MAC prefix 28BAB9?
28BAB9 is registered to ACME LIGHTING 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. ACME LIGHTING's block covers 16,777,216 addresses.
What devices use 28BAB9?
Any network device with a MAC address starting 28:BA:B9 was manufactured by or for ACME LIGHTING.