What this means
The IEEE assigned the MA-M block 78D4F12 to Lyngsoe Systems. 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 78:D4:F1:2, it is Lyngsoe Systems hardware.
Frequently Asked Questions
Who owns MAC prefix 78D4F12?
78D4F12 is registered to Lyngsoe Systems 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. Lyngsoe Systems's block covers 1,048,576 addresses.
What devices use 78D4F12?
Any network device with a MAC address starting 78:D4:F1:2 was manufactured by or for Lyngsoe Systems.