Who owns MAC prefix 74B472?

74B472 is registered to CIESSE in the IEEE MA-L registry.

What devices use 74B472?

Any network device with a MAC address starting 74:B4:72 was manufactured by or for CIESSE.

MA-L · OUI prefix

CIESSE

Any MAC address starting 74:B4:72 is registered to CIESSE in IT.

OUI prefix	74B472
Vendor	CIESSE
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	74:B4:72:00:00:00

What this means

The IEEE assigned the MA-L block 74B472 to CIESSE. 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 74:B4:72, it is CIESSE hardware.

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