What this means
The IEEE assigned the MA-L block AC567B to Sunnovo International 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 AC:56:7B, it is Sunnovo International Limited hardware.
Frequently Asked Questions
Who owns MAC prefix AC567B?
AC567B is registered to Sunnovo International 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. Sunnovo International Limited's block covers 16,777,216 addresses.
What devices use AC567B?
Any network device with a MAC address starting AC:56:7B was manufactured by or for Sunnovo International Limited.