What this means
The IEEE assigned the MA-L block ACF1DF to D-Link International. 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:F1:DF, it is D-Link International hardware.
Frequently Asked Questions
Who owns MAC prefix ACF1DF?
ACF1DF is registered to D-Link International 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. D-Link International's block covers 16,777,216 addresses.
What devices use ACF1DF?
Any network device with a MAC address starting AC:F1:DF was manufactured by or for D-Link International.