Who owns MAC prefix 581DC9?

581DC9 is registered to MSE CO.,LTD. in the IEEE MA-L registry.

What devices use 581DC9?

Any network device with a MAC address starting 58:1D:C9 was manufactured by or for MSE CO.,LTD..

MA-L · OUI prefix

MSE CO.,LTD.

Any MAC address starting 58:1D:C9 is registered to MSE CO.,LTD. in JP.

OUI prefix	581DC9
Vendor	MSE CO.,LTD.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	58:1D:C9:00:00:00

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.

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