Who owns MAC prefix 000FB1?

000FB1 is registered to Cognio Inc. in the IEEE MA-L registry.

What devices use 000FB1?

Any network device with a MAC address starting 00:0F:B1 was manufactured by or for Cognio Inc..

MA-L · OUI prefix

Cognio Inc.

Any MAC address starting 00:0F:B1 is registered to Cognio Inc. in US.

OUI prefix	000FB1
Vendor	Cognio Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:0F:B1:00:00:00

What this means

The IEEE assigned the MA-L block 000FB1 to Cognio 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 00:0F:B1, it is Cognio Inc. hardware.

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