What this means
The IEEE assigned the MA-L block 00207F to KYOEI SANGYO 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 00:20:7F, it is KYOEI SANGYO CO., LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 00207F?
00207F is registered to KYOEI SANGYO 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. KYOEI SANGYO CO., LTD.'s block covers 16,777,216 addresses.
What devices use 00207F?
Any network device with a MAC address starting 00:20:7F was manufactured by or for KYOEI SANGYO CO., LTD..