Who owns MAC prefix FC7F56?

FC7F56 is registered to CoSyst Control Systems GmbH in the IEEE MA-L registry.

What devices use FC7F56?

Any network device with a MAC address starting FC:7F:56 was manufactured by or for CoSyst Control Systems GmbH.

MA-L · OUI prefix

CoSyst Control Systems GmbH

Any MAC address starting FC:7F:56 is registered to CoSyst Control Systems GmbH in DE.

OUI prefix	FC7F56
Vendor	CoSyst Control Systems GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	FC:7F:56:00:00:00

What this means

The IEEE assigned the MA-L block FC7F56 to CoSyst Control Systems GmbH. 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:7F:56, it is CoSyst Control Systems GmbH hardware.

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