What this means
The IEEE assigned the MA-L block B4A828 to Shenzhen Concox Information 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 B4:A8:28, it is Shenzhen Concox Information Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B4A828?
B4A828 is registered to Shenzhen Concox Information 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 Concox Information Technology Co., Ltd's block covers 16,777,216 addresses.
What devices use B4A828?
Any network device with a MAC address starting B4:A8:28 was manufactured by or for Shenzhen Concox Information Technology Co., Ltd.