What this means
The IEEE assigned the MA-L block 90203A to BYD Precision Manufacture 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 90:20:3A, it is BYD Precision Manufacture Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 90203A?
90203A is registered to BYD Precision Manufacture 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. BYD Precision Manufacture Co.,Ltd's block covers 16,777,216 addresses.
What devices use 90203A?
Any network device with a MAC address starting 90:20:3A was manufactured by or for BYD Precision Manufacture Co.,Ltd.