What this means
The IEEE assigned the MA-L block FC3876 to Forum Communication Systems, 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:38:76, it is Forum Communication Systems, Inc hardware.
Frequently Asked Questions
Who owns MAC prefix FC3876?
FC3876 is registered to Forum Communication Systems, 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. Forum Communication Systems, Inc's block covers 16,777,216 addresses.
What devices use FC3876?
Any network device with a MAC address starting FC:38:76 was manufactured by or for Forum Communication Systems, Inc.