Who owns MAC prefix D809C3?

D809C3 is registered to Cercacor Labs in the IEEE MA-L registry.

What devices use D809C3?

Any network device with a MAC address starting D8:09:C3 was manufactured by or for Cercacor Labs.

MA-L · OUI prefix

Cercacor Labs

Any MAC address starting D8:09:C3 is registered to Cercacor Labs in US.

OUI prefix	D809C3
Vendor	Cercacor Labs
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	D8:09:C3:00:00:00

What this means

The IEEE assigned the MA-L block D809C3 to Cercacor Labs. 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 D8:09:C3, it is Cercacor Labs hardware.

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