Who owns MAC prefix 345C40?

345C40 is registered to Cargt Holdings LLC in the IEEE MA-L registry.

What devices use 345C40?

Any network device with a MAC address starting 34:5C:40 was manufactured by or for Cargt Holdings LLC.

MA-L · OUI prefix

Cargt Holdings LLC

Any MAC address starting 34:5C:40 is registered to Cargt Holdings LLC in US.

OUI prefix	345C40
Vendor	Cargt Holdings LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	34:5C:40:00:00:00

What this means

The IEEE assigned the MA-L block 345C40 to Cargt Holdings LLC. 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 34:5C:40, it is Cargt Holdings LLC hardware.

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