What this means
The IEEE assigned the MA-L block F49C12 to Structab AB. 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 F4:9C:12, it is Structab AB hardware.
Frequently Asked Questions
Who owns MAC prefix F49C12?
F49C12 is registered to Structab AB 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. Structab AB's block covers 16,777,216 addresses.
What devices use F49C12?
Any network device with a MAC address starting F4:9C:12 was manufactured by or for Structab AB.