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.
Frequently Asked Questions
Who owns MAC prefix D809C3?
D809C3 is registered to Cercacor Labs in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Cercacor Labs's block covers 16,777,216 addresses.
What devices use D809C3?
Any network device with a MAC address starting D8:09:C3 was manufactured by or for Cercacor Labs.