What this means
The IEEE assigned the MA-L block 00051F to Taijin Media 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 00:05:1F, it is Taijin Media Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 00051F?
00051F is registered to Taijin Media 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. Taijin Media Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 00051F?
Any network device with a MAC address starting 00:05:1F was manufactured by or for Taijin Media Co., Ltd..