What this means
The IEEE assigned the MA-L block 74273C to ChangYang Technology (Nanjing) 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 74:27:3C, it is ChangYang Technology (Nanjing) Co., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 74273C?
74273C is registered to ChangYang Technology (Nanjing) 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. ChangYang Technology (Nanjing) Co., LTD's block covers 16,777,216 addresses.
What devices use 74273C?
Any network device with a MAC address starting 74:27:3C was manufactured by or for ChangYang Technology (Nanjing) Co., LTD.