What this means
The IEEE assigned the MA-M block CCD31E3 to KEN A/S. 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 CC:D3:1E:3, it is KEN A/S hardware.
Frequently Asked Questions
Who owns MAC prefix CCD31E3?
CCD31E3 is registered to KEN A/S in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. KEN A/S's block covers 1,048,576 addresses.
What devices use CCD31E3?
Any network device with a MAC address starting CC:D3:1E:3 was manufactured by or for KEN A/S.