What this means
The IEEE assigned the MA-L block 04FA3F to OptiCore 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 04:FA:3F, it is OptiCore Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 04FA3F?
04FA3F is registered to OptiCore 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. OptiCore Inc.'s block covers 16,777,216 addresses.
What devices use 04FA3F?
Any network device with a MAC address starting 04:FA:3F was manufactured by or for OptiCore Inc..