Who owns MAC prefix 401175A?

401175A is registered to BWT Tianjin Ltd. in the IEEE MA-M registry.

What devices use 401175A?

Any network device with a MAC address starting 40:11:75:A was manufactured by or for BWT Tianjin Ltd..

MA-M · OUI prefix

BWT Tianjin Ltd.

Any MAC address starting 40:11:75:A is registered to BWT Tianjin Ltd. in CN.

OUI prefix	401175A
Vendor	BWT Tianjin Ltd.
Registry	MA-M (28-bit, medium block)
Country	CN
Example MAC	40:11:75:A:00:00:00

What this means

The IEEE assigned the MA-M block 401175A to BWT Tianjin 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 40:11:75:A, it is BWT Tianjin Ltd. hardware.

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