What this means
The IEEE assigned the MA-L block 58219D to Shanghai Timar Integrated Circuit 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 58:21:9D, it is Shanghai Timar Integrated Circuit Co., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 58219D?
58219D is registered to Shanghai Timar Integrated Circuit 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. Shanghai Timar Integrated Circuit Co., LTD's block covers 16,777,216 addresses.
What devices use 58219D?
Any network device with a MAC address starting 58:21:9D was manufactured by or for Shanghai Timar Integrated Circuit Co., LTD.