What this means
The IEEE assigned the MA-L block D43D39 to Dialog Semiconductor. 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 D4:3D:39, it is Dialog Semiconductor hardware.
Frequently Asked Questions
Who owns MAC prefix D43D39?
D43D39 is registered to Dialog Semiconductor 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. Dialog Semiconductor's block covers 16,777,216 addresses.
What devices use D43D39?
Any network device with a MAC address starting D4:3D:39 was manufactured by or for Dialog Semiconductor.