Who owns MAC prefix 00C0A4?

00C0A4 is registered to UNIGRAF OY in the IEEE MA-L registry.

What devices use 00C0A4?

Any network device with a MAC address starting 00:C0:A4 was manufactured by or for UNIGRAF OY.

MA-L · OUI prefix

UNIGRAF OY

Any MAC address starting 00:C0:A4 is registered to UNIGRAF OY in FI.

OUI prefix	00C0A4
Vendor	UNIGRAF OY
Registry	MA-L (24-bit, large block)
Country	FI
Example MAC	00:C0:A4:00:00:00

What this means

The IEEE assigned the MA-L block 00C0A4 to UNIGRAF OY. 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 00:C0:A4, it is UNIGRAF OY hardware.

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