Who owns MAC prefix C0D3912?

C0D3912 is registered to Hofon Automation Co.,Ltd in the IEEE MA-M registry.

What devices use C0D3912?

Any network device with a MAC address starting C0:D3:91:2 was manufactured by or for Hofon Automation Co.,Ltd.

MA-M · OUI prefix

Hofon Automation Co.,Ltd

Any MAC address starting C0:D3:91:2 is registered to Hofon Automation Co.,Ltd in CN.

OUI prefix	C0D3912
Vendor	Hofon Automation Co.,Ltd
Registry	MA-M (28-bit, medium block)
Country	CN
Example MAC	C0:D3:91:2:00:00:00

What this means

The IEEE assigned the MA-M block C0D3912 to Hofon Automation Co.,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 C0:D3:91:2, it is Hofon Automation Co.,Ltd hardware.

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