What this means
The IEEE assigned the MA-L block 14157C to TOKYO COSMOS 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 14:15:7C, it is TOKYO COSMOS ELECTRIC CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 14157C?
14157C is registered to TOKYO COSMOS 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. TOKYO COSMOS ELECTRIC CO.,LTD.'s block covers 16,777,216 addresses.
What devices use 14157C?
Any network device with a MAC address starting 14:15:7C was manufactured by or for TOKYO COSMOS ELECTRIC CO.,LTD..