What this means
The IEEE assigned the MA-L block F81D93 to Longdhua(Beijing) Controls 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 F8:1D:93, it is Longdhua(Beijing) Controls Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix F81D93?
F81D93 is registered to Longdhua(Beijing) Controls 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. Longdhua(Beijing) Controls Technology Co.,Ltd's block covers 16,777,216 addresses.
What devices use F81D93?
Any network device with a MAC address starting F8:1D:93 was manufactured by or for Longdhua(Beijing) Controls Technology Co.,Ltd.