What this means
The IEEE assigned the MA-M block AC1DDFD to Elekon AG. 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 AC:1D:DF:D, it is Elekon AG hardware.
Frequently Asked Questions
Who owns MAC prefix AC1DDFD?
AC1DDFD is registered to Elekon AG 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. Elekon AG's block covers 1,048,576 addresses.
What devices use AC1DDFD?
Any network device with a MAC address starting AC:1D:DF:D was manufactured by or for Elekon AG.