Who owns MAC prefix 28B3AF?

28B3AF is registered to Qualynxus Inc in the IEEE MA-L registry.

What devices use 28B3AF?

Any network device with a MAC address starting 28:B3:AF was manufactured by or for Qualynxus Inc.

MA-L · OUI prefix

Qualynxus Inc

Any MAC address starting 28:B3:AF is registered to Qualynxus Inc in US.

OUI prefix	28B3AF
Vendor	Qualynxus Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	28:B3:AF:00:00:00

What this means

The IEEE assigned the MA-L block 28B3AF to Qualynxus 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 28:B3:AF, it is Qualynxus Inc hardware.

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