What this means
The IEEE assigned the MA-L block FC5090 to SIMEX Sp. z o.o.. 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:50:90, it is SIMEX Sp. z o.o. hardware.
Frequently Asked Questions
Who owns MAC prefix FC5090?
FC5090 is registered to SIMEX Sp. z o.o. 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. SIMEX Sp. z o.o.'s block covers 16,777,216 addresses.
What devices use FC5090?
Any network device with a MAC address starting FC:50:90 was manufactured by or for SIMEX Sp. z o.o..