Who owns MAC prefix 000939?

000939 is registered to ShibaSoku Co.,Ltd. in the IEEE MA-L registry.

What devices use 000939?

Any network device with a MAC address starting 00:09:39 was manufactured by or for ShibaSoku Co.,Ltd..

MA-L · OUI prefix

ShibaSoku Co.,Ltd.

Any MAC address starting 00:09:39 is registered to ShibaSoku Co.,Ltd. in JP.

OUI prefix	000939
Vendor	ShibaSoku Co.,Ltd.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:09:39:00:00:00

What this means

The IEEE assigned the MA-L block 000939 to ShibaSoku 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 00:09:39, it is ShibaSoku Co.,Ltd. hardware.

Look up another MAC