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.
Frequently Asked Questions
Who owns MAC prefix 004059?
004059 is registered to YOSHIDA KOGYO K. K. 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. YOSHIDA KOGYO K. K.'s block covers 16,777,216 addresses.
What devices use 004059?
Any network device with a MAC address starting 00:40:59 was manufactured by or for YOSHIDA KOGYO K. K..