Who owns MAC prefix B4DF09?

B4DF09 is registered to FLUX:: in the IEEE MA-L registry.

What devices use B4DF09?

Any network device with a MAC address starting B4:DF:09 was manufactured by or for FLUX::.

MA-L · OUI prefix

FLUX::

Any MAC address starting B4:DF:09 is registered to FLUX:: in US.

OUI prefix	B4DF09
Vendor	FLUX::
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	B4:DF:09:00:00:00

What this means

The IEEE assigned the MA-L block B4DF09 to FLUX::. 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:DF:09, it is FLUX:: hardware.

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