Who owns MAC prefix C4F839?

C4F839 is registered to Actia Automotive in the IEEE MA-L registry.

What devices use C4F839?

Any network device with a MAC address starting C4:F8:39 was manufactured by or for Actia Automotive.

MA-L · OUI prefix

Actia Automotive

Any MAC address starting C4:F8:39 is registered to Actia Automotive in FR.

OUI prefix	C4F839
Vendor	Actia Automotive
Registry	MA-L (24-bit, large block)
Country	FR
Example MAC	C4:F8:39:00:00:00

What this means

The IEEE assigned the MA-L block C4F839 to Actia Automotive. 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 C4:F8:39, it is Actia Automotive hardware.

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