What this means
The IEEE assigned the MA-L block FC1BFF to V-ZUG AG. 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:1B:FF, it is V-ZUG AG hardware.
Frequently Asked Questions
Who owns MAC prefix FC1BFF?
FC1BFF is registered to V-ZUG AG 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. V-ZUG AG's block covers 16,777,216 addresses.
What devices use FC1BFF?
Any network device with a MAC address starting FC:1B:FF was manufactured by or for V-ZUG AG.