Who owns MAC prefix 4CBCB4?

4CBCB4 is registered to ABB SpA - DIN Rail in the IEEE MA-L registry.

What devices use 4CBCB4?

Any network device with a MAC address starting 4C:BC:B4 was manufactured by or for ABB SpA - DIN Rail.

MA-L · OUI prefix

ABB SpA - DIN Rail

Any MAC address starting 4C:BC:B4 is registered to ABB SpA - DIN Rail in IT.

OUI prefix	4CBCB4
Vendor	ABB SpA - DIN Rail
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	4C:BC:B4:00:00:00

What this means

The IEEE assigned the MA-L block 4CBCB4 to ABB SpA - DIN Rail. 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 4C:BC:B4, it is ABB SpA - DIN Rail hardware.

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