Who owns MAC prefix F40321?

F40321 is registered to BeNeXt B.V. in the IEEE MA-L registry.

What devices use F40321?

Any network device with a MAC address starting F4:03:21 was manufactured by or for BeNeXt B.V..

MA-L · OUI prefix

BeNeXt B.V.

Any MAC address starting F4:03:21 is registered to BeNeXt B.V. in NL.

OUI prefix	F40321
Vendor	BeNeXt B.V.
Registry	MA-L (24-bit, large block)
Country	NL
Example MAC	F4:03:21:00:00:00

What this means

The IEEE assigned the MA-L block F40321 to BeNeXt B.V.. 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 F4:03:21, it is BeNeXt B.V. hardware.

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