Who owns MAC prefix A019B23?

A019B23 is registered to Power Diagnostic Service Co., LTD. in the IEEE MA-M registry.

What devices use A019B23?

Any network device with a MAC address starting A0:19:B2:3 was manufactured by or for Power Diagnostic Service Co., LTD..

MA-M · OUI prefix

Power Diagnostic Service Co., LTD.

Any MAC address starting A0:19:B2:3 is registered to Power Diagnostic Service Co., LTD. in TW.

OUI prefix	A019B23
Vendor	Power Diagnostic Service Co., LTD.
Registry	MA-M (28-bit, medium block)
Country	TW
Example MAC	A0:19:B2:3:00:00:00

What this means

The IEEE assigned the MA-M block A019B23 to Power Diagnostic Service 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 A0:19:B2:3, it is Power Diagnostic Service Co., LTD. hardware.

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