What this means
The IEEE assigned the MA-L block DCB131 to SHENZHEN HUARUIAN TECHNOLOGY 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:B1:31, it is SHENZHEN HUARUIAN TECHNOLOGY CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix DCB131?
DCB131 is registered to SHENZHEN HUARUIAN TECHNOLOGY 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 HUARUIAN TECHNOLOGY CO.,LTD's block covers 16,777,216 addresses.
What devices use DCB131?
Any network device with a MAC address starting DC:B1:31 was manufactured by or for SHENZHEN HUARUIAN TECHNOLOGY CO.,LTD.