What this means
The IEEE assigned the MA-L block 4CD9C4 to Magneti Marelli Automotive Electronics (Guangzhou) Co. Ltd. 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 4C:D9:C4, it is Magneti Marelli Automotive Electronics (Guangzhou) Co. Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 4CD9C4?
4CD9C4 is registered to Magneti Marelli Automotive Electronics (Guangzhou) Co. Ltd 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. Magneti Marelli Automotive Electronics (Guangzhou) Co. Ltd's block covers 16,777,216 addresses.
What devices use 4CD9C4?
Any network device with a MAC address starting 4C:D9:C4 was manufactured by or for Magneti Marelli Automotive Electronics (Guangzhou) Co. Ltd.