Who owns MAC prefix DC663A?

DC663A is registered to Apacer Technology Inc. in the IEEE MA-L registry.

What devices use DC663A?

Any network device with a MAC address starting DC:66:3A was manufactured by or for Apacer Technology Inc..

MA-L · OUI prefix

Apacer Technology Inc.

Any MAC address starting DC:66:3A is registered to Apacer Technology Inc. in TW.

OUI prefix	DC663A
Vendor	Apacer Technology Inc.
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	DC:66:3A:00:00:00

What this means

The IEEE assigned the MA-L block DC663A to Apacer Technology 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 DC:66:3A, it is Apacer Technology Inc. hardware.

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