What this means
The IEEE assigned the MA-L block F809A4 to Henan Thinker Rail Transportation Research Inc.. 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 F8:09:A4, it is Henan Thinker Rail Transportation Research Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix F809A4?
F809A4 is registered to Henan Thinker Rail Transportation Research Inc. 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. Henan Thinker Rail Transportation Research Inc.'s block covers 16,777,216 addresses.
What devices use F809A4?
Any network device with a MAC address starting F8:09:A4 was manufactured by or for Henan Thinker Rail Transportation Research Inc..