What this means
The IEEE assigned the MA-L block 3C69D1 to ADC Automotive Distance Control System GmbH. 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 3C:69:D1, it is ADC Automotive Distance Control System GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 3C69D1?
3C69D1 is registered to ADC Automotive Distance Control System GmbH 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. ADC Automotive Distance Control System GmbH's block covers 16,777,216 addresses.
What devices use 3C69D1?
Any network device with a MAC address starting 3C:69:D1 was manufactured by or for ADC Automotive Distance Control System GmbH.