What this means
The IEEE assigned the MA-M block C0FBF92 to Dongguan Chuan OptoElectronics 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 C0:FB:F9:2, it is Dongguan Chuan OptoElectronics Limited hardware.
Frequently Asked Questions
Who owns MAC prefix C0FBF92?
C0FBF92 is registered to Dongguan Chuan OptoElectronics Limited in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Dongguan Chuan OptoElectronics Limited's block covers 1,048,576 addresses.
What devices use C0FBF92?
Any network device with a MAC address starting C0:FB:F9:2 was manufactured by or for Dongguan Chuan OptoElectronics Limited.