Who owns MAC prefix 9038DF?

9038DF is registered to Changzhou Tiannengbo System Co. Ltd. in the IEEE MA-L registry.

What devices use 9038DF?

Any network device with a MAC address starting 90:38:DF was manufactured by or for Changzhou Tiannengbo System Co. Ltd..

MA-L · OUI prefix

Changzhou Tiannengbo System Co. Ltd.

Any MAC address starting 90:38:DF is registered to Changzhou Tiannengbo System Co. Ltd. in CN.

OUI prefix	9038DF
Vendor	Changzhou Tiannengbo System Co. Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	90:38:DF:00:00:00

What this means

The IEEE assigned the MA-L block 9038DF to Changzhou Tiannengbo System 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 90:38:DF, it is Changzhou Tiannengbo System Co. Ltd. hardware.

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