What this means
The IEEE assigned the MA-L block 7820BD to Polysense (Beijing) Technologies 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 78:20:BD, it is Polysense (Beijing) Technologies Co. Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 7820BD?
7820BD is registered to Polysense (Beijing) Technologies 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. Polysense (Beijing) Technologies Co. Ltd's block covers 16,777,216 addresses.
What devices use 7820BD?
Any network device with a MAC address starting 78:20:BD was manufactured by or for Polysense (Beijing) Technologies Co. Ltd.