What this means
The IEEE assigned the MA-M block C09BF4B to NUCTECH COMPANY 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 C0:9B:F4:B, it is NUCTECH COMPANY LIMITED hardware.
Frequently Asked Questions
Who owns MAC prefix C09BF4B?
C09BF4B is registered to NUCTECH COMPANY 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. NUCTECH COMPANY LIMITED's block covers 1,048,576 addresses.
What devices use C09BF4B?
Any network device with a MAC address starting C0:9B:F4:B was manufactured by or for NUCTECH COMPANY LIMITED.