Who owns MAC prefix 6CDFD9?

6CDFD9 is registered to Concept2, Inc. in the IEEE MA-L registry.

What devices use 6CDFD9?

Any network device with a MAC address starting 6C:DF:D9 was manufactured by or for Concept2, Inc..

MA-L · OUI prefix

Concept2, Inc.

Any MAC address starting 6C:DF:D9 is registered to Concept2, Inc. in US.

OUI prefix	6CDFD9
Vendor	Concept2, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	6C:DF:D9:00:00:00

What this means

The IEEE assigned the MA-L block 6CDFD9 to Concept2, 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 6C:DF:D9, it is Concept2, Inc. hardware.

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