What this means
The IEEE assigned the MA-L block 000A66 to MITSUBISHI ELECTRIC SYSTEM & SERVICE 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 00:0A:66, it is MITSUBISHI ELECTRIC SYSTEM & SERVICE CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 000A66?
000A66 is registered to MITSUBISHI ELECTRIC SYSTEM & SERVICE 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. MITSUBISHI ELECTRIC SYSTEM & SERVICE CO.,LTD.'s block covers 16,777,216 addresses.
What devices use 000A66?
Any network device with a MAC address starting 00:0A:66 was manufactured by or for MITSUBISHI ELECTRIC SYSTEM & SERVICE CO.,LTD..