What this means
The IEEE assigned the MA-M block 0CBFB4B to 대한전력전자. 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 0C:BF:B4:B, it is 대한전력전자 hardware.
Frequently Asked Questions
Who owns MAC prefix 0CBFB4B?
0CBFB4B is registered to 대한전력전자 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. 대한전력전자's block covers 1,048,576 addresses.
What devices use 0CBFB4B?
Any network device with a MAC address starting 0C:BF:B4:B was manufactured by or for 대한전력전자.