Who owns MAC prefix C4C919?

C4C919 is registered to Energy Imports Ltd in the IEEE MA-L registry.

What devices use C4C919?

Any network device with a MAC address starting C4:C9:19 was manufactured by or for Energy Imports Ltd.

MA-L · OUI prefix

Energy Imports Ltd

Any MAC address starting C4:C9:19 is registered to Energy Imports Ltd in NZ.

OUI prefix	C4C919
Vendor	Energy Imports Ltd
Registry	MA-L (24-bit, large block)
Country	NZ
Example MAC	C4:C9:19:00:00:00

What this means

The IEEE assigned the MA-L block C4C919 to Energy Imports Ltd. 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:C9:19, it is Energy Imports Ltd hardware.

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