Who owns MAC prefix C0D391A?

C0D391A is registered to Alpha Audiotronics, Inc. in the IEEE MA-M registry.

What devices use C0D391A?

Any network device with a MAC address starting C0:D3:91:A was manufactured by or for Alpha Audiotronics, Inc..

MA-M · OUI prefix

Alpha Audiotronics, Inc.

Any MAC address starting C0:D3:91:A is registered to Alpha Audiotronics, Inc. in US.

OUI prefix	C0D391A
Vendor	Alpha Audiotronics, Inc.
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	C0:D3:91:A:00:00:00

What this means

The IEEE assigned the MA-M block C0D391A to Alpha Audiotronics, 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 C0:D3:91:A, it is Alpha Audiotronics, Inc. hardware.

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