What this means
The IEEE assigned the MA-L block FC4AE9 to Castlenet Technology Inc.. 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 FC:4A:E9, it is Castlenet Technology Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix FC4AE9?
FC4AE9 is registered to Castlenet Technology Inc. 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. Castlenet Technology Inc.'s block covers 16,777,216 addresses.
What devices use FC4AE9?
Any network device with a MAC address starting FC:4A:E9 was manufactured by or for Castlenet Technology Inc..