What this means
The IEEE assigned the MA-L block B820E7 to Guangzhou Horizontal Information & Network Integration 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 B8:20:E7, it is Guangzhou Horizontal Information & Network Integration Co. Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B820E7?
B820E7 is registered to Guangzhou Horizontal Information & Network Integration 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. Guangzhou Horizontal Information & Network Integration Co. Ltd's block covers 16,777,216 addresses.
What devices use B820E7?
Any network device with a MAC address starting B8:20:E7 was manufactured by or for Guangzhou Horizontal Information & Network Integration Co. Ltd.