What this means
The IEEE assigned the MA-L block 00114D to Atsumi Electric 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 00:11:4D, it is Atsumi Electric Co.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 00114D?
00114D is registered to Atsumi Electric 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. Atsumi Electric Co.,LTD.'s block covers 16,777,216 addresses.
What devices use 00114D?
Any network device with a MAC address starting 00:11:4D was manufactured by or for Atsumi Electric Co.,LTD..