What this means
The IEEE assigned the MA-L block D4EC0C to Harley-Davidson Motor Company. 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 D4:EC:0C, it is Harley-Davidson Motor Company hardware.
Frequently Asked Questions
Who owns MAC prefix D4EC0C?
D4EC0C is registered to Harley-Davidson Motor Company 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. Harley-Davidson Motor Company's block covers 16,777,216 addresses.
What devices use D4EC0C?
Any network device with a MAC address starting D4:EC:0C was manufactured by or for Harley-Davidson Motor Company.