What this means
The IEEE assigned the MA-L block 000C4C to Arcor AG&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 00:0C:4C, it is Arcor AG&Co. hardware.
Frequently Asked Questions
Who owns MAC prefix 000C4C?
000C4C is registered to Arcor AG&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. Arcor AG&Co.'s block covers 16,777,216 addresses.
What devices use 000C4C?
Any network device with a MAC address starting 00:0C:4C was manufactured by or for Arcor AG&Co..