What this means
The IEEE assigned the MA-L block 1081B4 to Hunan Greatwall Galaxy Science and 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 10:81:B4, it is Hunan Greatwall Galaxy Science and Technology Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 1081B4?
1081B4 is registered to Hunan Greatwall Galaxy Science and 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. Hunan Greatwall Galaxy Science and Technology Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use 1081B4?
Any network device with a MAC address starting 10:81:B4 was manufactured by or for Hunan Greatwall Galaxy Science and Technology Co.,Ltd..