What this means
The IEEE assigned the MA-L block 308999 to Guangdong East Power Co.,. 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 30:89:99, it is Guangdong East Power Co., hardware.
Frequently Asked Questions
Who owns MAC prefix 308999?
308999 is registered to Guangdong East Power Co., 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. Guangdong East Power Co.,'s block covers 16,777,216 addresses.
What devices use 308999?
Any network device with a MAC address starting 30:89:99 was manufactured by or for Guangdong East Power Co.,.