What this means
The IEEE assigned the MA-L block D8977C to Grey Innovation. 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 D8:97:7C, it is Grey Innovation hardware.
Frequently Asked Questions
Who owns MAC prefix D8977C?
D8977C is registered to Grey Innovation in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Grey Innovation's block covers 16,777,216 addresses.
What devices use D8977C?
Any network device with a MAC address starting D8:97:7C was manufactured by or for Grey Innovation.