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.
Frequently Asked Questions
Who owns MAC prefix 28FD800?
28FD800 is registered to Millcode in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Millcode's block covers 1,048,576 addresses.
What devices use 28FD800?
Any network device with a MAC address starting 28:FD:80:0 was manufactured by or for Millcode.