Who owns MAC prefix AC20AA?

AC20AA is registered to DMATEK Co., Ltd. in the IEEE MA-L registry.

What devices use AC20AA?

Any network device with a MAC address starting AC:20:AA was manufactured by or for DMATEK Co., Ltd..

MA-L · OUI prefix

DMATEK Co., Ltd.

Any MAC address starting AC:20:AA is registered to DMATEK Co., Ltd. in TW.

OUI prefix	AC20AA
Vendor	DMATEK Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	AC:20:AA:00:00:00

What this means

The IEEE assigned the MA-L block AC20AA to DMATEK 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 AC:20:AA, it is DMATEK Co., Ltd. hardware.

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