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