What this means
The IEEE assigned the MA-M block CCD39DD to Ethernity Networks. 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:D3:9D:D, it is Ethernity Networks hardware.
Frequently Asked Questions
Who owns MAC prefix CCD39DD?
CCD39DD is registered to Ethernity Networks 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. Ethernity Networks's block covers 1,048,576 addresses.
What devices use CCD39DD?
Any network device with a MAC address starting CC:D3:9D:D was manufactured by or for Ethernity Networks.