What this means
The IEEE assigned the MA-L block D878E5 to KUHN SA. 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 D8:78:E5, it is KUHN SA hardware.
Frequently Asked Questions
Who owns MAC prefix D878E5?
D878E5 is registered to KUHN SA 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. KUHN SA's block covers 16,777,216 addresses.
What devices use D878E5?
Any network device with a MAC address starting D8:78:E5 was manufactured by or for KUHN SA.