What this means
The IEEE assigned the MA-L block 8CA9FD to Copper Mountain Technologies. 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 8C:A9:FD, it is Copper Mountain Technologies hardware.
Frequently Asked Questions
Who owns MAC prefix 8CA9FD?
8CA9FD is registered to Copper Mountain Technologies 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. Copper Mountain Technologies's block covers 16,777,216 addresses.
What devices use 8CA9FD?
Any network device with a MAC address starting 8C:A9:FD was manufactured by or for Copper Mountain Technologies.