What this means
The IEEE assigned the MA-M block 5C87D88 to fmad engineering. 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 5C:87:D8:8, it is fmad engineering hardware.
Frequently Asked Questions
Who owns MAC prefix 5C87D88?
5C87D88 is registered to fmad engineering 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. fmad engineering's block covers 1,048,576 addresses.
What devices use 5C87D88?
Any network device with a MAC address starting 5C:87:D8:8 was manufactured by or for fmad engineering.