What this means
The IEEE assigned the MA-M block 383A210 to R3C Information(Shenzhen) 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 38:3A:21:0, it is R3C Information(Shenzhen) Co.，Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 383A210?
383A210 is registered to R3C Information(Shenzhen) Co.，Ltd. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. R3C Information(Shenzhen) Co.，Ltd.'s block covers 1,048,576 addresses.
What devices use 383A210?
Any network device with a MAC address starting 38:3A:21:0 was manufactured by or for R3C Information(Shenzhen) Co.，Ltd..