What this means
The IEEE assigned the MA-L block 28B446 to SHENZHEN CHUANGWEI-RGB ELECTRONICS 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 28:B4:46, it is SHENZHEN CHUANGWEI-RGB ELECTRONICS CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 28B446?
28B446 is registered to SHENZHEN CHUANGWEI-RGB ELECTRONICS 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. SHENZHEN CHUANGWEI-RGB ELECTRONICS CO.,LTD's block covers 16,777,216 addresses.
What devices use 28B446?
Any network device with a MAC address starting 28:B4:46 was manufactured by or for SHENZHEN CHUANGWEI-RGB ELECTRONICS CO.,LTD.