Who owns MAC prefix A40DBC?

A40DBC is registered to Xiamen Intretech Inc. in the IEEE MA-L registry.

What devices use A40DBC?

Any network device with a MAC address starting A4:0D:BC was manufactured by or for Xiamen Intretech Inc..

MA-L · OUI prefix

Xiamen Intretech Inc.

Any MAC address starting A4:0D:BC is registered to Xiamen Intretech Inc. in CN.

OUI prefix	A40DBC
Vendor	Xiamen Intretech Inc.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	A4:0D:BC:00:00:00

What this means

The IEEE assigned the MA-L block A40DBC to Xiamen Intretech Inc.. 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 A4:0D:BC, it is Xiamen Intretech Inc. hardware.

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