What this means
The IEEE assigned the MA-L block ACA9A0 to Audioengine, Ltd.. 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 AC:A9:A0, it is Audioengine, Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix ACA9A0?
ACA9A0 is registered to Audioengine, Ltd. 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. Audioengine, Ltd.'s block covers 16,777,216 addresses.
What devices use ACA9A0?
Any network device with a MAC address starting AC:A9:A0 was manufactured by or for Audioengine, Ltd..