What this means
The IEEE assigned the MA-L block 6CDC6A to Promethean Limited. 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 6C:DC:6A, it is Promethean Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 6CDC6A?
6CDC6A is registered to Promethean Limited 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. Promethean Limited's block covers 16,777,216 addresses.
What devices use 6CDC6A?
Any network device with a MAC address starting 6C:DC:6A was manufactured by or for Promethean Limited.