What this means
The IEEE assigned the MA-L block DC045A to Nanjing Qinheng Microelectronics 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 DC:04:5A, it is Nanjing Qinheng Microelectronics Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix DC045A?
DC045A is registered to Nanjing Qinheng Microelectronics 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. Nanjing Qinheng Microelectronics Co., Ltd.'s block covers 16,777,216 addresses.
What devices use DC045A?
Any network device with a MAC address starting DC:04:5A was manufactured by or for Nanjing Qinheng Microelectronics Co., Ltd..