What this means
The IEEE assigned the MA-L block 581DC9 to MSE 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 58:1D:C9, it is MSE CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 581DC9?
581DC9 is registered to MSE 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. MSE CO.,LTD.'s block covers 16,777,216 addresses.
What devices use 581DC9?
Any network device with a MAC address starting 58:1D:C9 was manufactured by or for MSE CO.,LTD..