What this means
The IEEE assigned the MA-L block 0004C9 to Micro Electron 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 00:04:C9, it is Micro Electron Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 0004C9?
0004C9 is registered to Micro Electron 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. Micro Electron Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 0004C9?
Any network device with a MAC address starting 00:04:C9 was manufactured by or for Micro Electron Co., Ltd..