What this means
The IEEE assigned the MA-L block 50CF56 to China Mobile Group Device 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 50:CF:56, it is China Mobile Group Device Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 50CF56?
50CF56 is registered to China Mobile Group Device 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. China Mobile Group Device Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use 50CF56?
Any network device with a MAC address starting 50:CF:56 was manufactured by or for China Mobile Group Device Co.,Ltd..