What this means
The IEEE assigned the MA-L block D0CF5E to Energy Micro AS. 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 D0:CF:5E, it is Energy Micro AS hardware.
Frequently Asked Questions
Who owns MAC prefix D0CF5E?
D0CF5E is registered to Energy Micro AS 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. Energy Micro AS's block covers 16,777,216 addresses.
What devices use D0CF5E?
Any network device with a MAC address starting D0:CF:5E was manufactured by or for Energy Micro AS.