Who owns MAC prefix 90F4211?

90F4211 is registered to BeEnergy SG GmbH in the IEEE MA-M registry.

What devices use 90F4211?

Any network device with a MAC address starting 90:F4:21:1 was manufactured by or for BeEnergy SG GmbH.

MA-M · OUI prefix

BeEnergy SG GmbH

Any MAC address starting 90:F4:21:1 is registered to BeEnergy SG GmbH in DE.

OUI prefix	90F4211
Vendor	BeEnergy SG GmbH
Registry	MA-M (28-bit, medium block)
Country	DE
Example MAC	90:F4:21:1:00:00:00

What this means

The IEEE assigned the MA-M block 90F4211 to BeEnergy SG GmbH. 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 90:F4:21:1, it is BeEnergy SG GmbH hardware.

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