Who owns MAC prefix 004059?

004059 is registered to YOSHIDA KOGYO K. K. in the IEEE MA-L registry.

What devices use 004059?

Any network device with a MAC address starting 00:40:59 was manufactured by or for YOSHIDA KOGYO K. K..

MA-L · OUI prefix

YOSHIDA KOGYO K. K.

Any MAC address starting 00:40:59 is registered to YOSHIDA KOGYO K. K. in JP.

OUI prefix	004059
Vendor	YOSHIDA KOGYO K. K.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:40:59:00:00:00

What this means

The IEEE assigned the MA-L block 004059 to YOSHIDA KOGYO K. K.. 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 00:40:59, it is YOSHIDA KOGYO K. K. hardware.

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