Who owns MAC prefix B4CDF5?

B4CDF5 is registered to CUB ELECPARTS INC. in the IEEE MA-L registry.

What devices use B4CDF5?

Any network device with a MAC address starting B4:CD:F5 was manufactured by or for CUB ELECPARTS INC..

MA-L · OUI prefix

CUB ELECPARTS INC.

Any MAC address starting B4:CD:F5 is registered to CUB ELECPARTS INC. in TW.

OUI prefix	B4CDF5
Vendor	CUB ELECPARTS INC.
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	B4:CD:F5:00:00:00

What this means

The IEEE assigned the MA-L block B4CDF5 to CUB ELECPARTS 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 B4:CD:F5, it is CUB ELECPARTS INC. hardware.

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