Who owns MAC prefix 28FD800?

28FD800 is registered to Millcode in the IEEE MA-M registry.

What devices use 28FD800?

Any network device with a MAC address starting 28:FD:80:0 was manufactured by or for Millcode.

MA-M · OUI prefix

Millcode

Any MAC address starting 28:FD:80:0 is registered to Millcode in SE.

OUI prefix	28FD800
Vendor	Millcode
Registry	MA-M (28-bit, medium block)
Country	SE
Example MAC	28:FD:80:0:00:00:00

What this means

The IEEE assigned the MA-M block 28FD800 to Millcode. 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:FD:80:0, it is Millcode hardware.

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