What this means
The IEEE assigned the MA-L block 00C0A1 to TOKYO DENSHI SEKEI CO.. 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:C0:A1, it is TOKYO DENSHI SEKEI CO. hardware.
Frequently Asked Questions
Who owns MAC prefix 00C0A1?
00C0A1 is registered to TOKYO DENSHI SEKEI CO. 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 DENSHI SEKEI CO.'s block covers 16,777,216 addresses.
What devices use 00C0A1?
Any network device with a MAC address starting 00:C0:A1 was manufactured by or for TOKYO DENSHI SEKEI CO..