What this means
The IEEE assigned the MA-L block 4821B8 to Guangzhou V-Solution Telecommunication 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 48:21:B8, it is Guangzhou V-Solution Telecommunication Technology Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 4821B8?
4821B8 is registered to Guangzhou V-Solution Telecommunication 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. Guangzhou V-Solution Telecommunication Technology Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use 4821B8?
Any network device with a MAC address starting 48:21:B8 was manufactured by or for Guangzhou V-Solution Telecommunication Technology Co.,Ltd..