Who owns MAC prefix 0040F0?

0040F0 is registered to MicroBrain,Inc. in the IEEE MA-L registry.

What devices use 0040F0?

Any network device with a MAC address starting 00:40:F0 was manufactured by or for MicroBrain,Inc..

MA-L · OUI prefix

MicroBrain,Inc.

Any MAC address starting 00:40:F0 is registered to MicroBrain,Inc. in JP.

OUI prefix	0040F0
Vendor	MicroBrain,Inc.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:40:F0:00:00:00

What this means

The IEEE assigned the MA-L block 0040F0 to MicroBrain,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 00:40:F0, it is MicroBrain,Inc. hardware.

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