What this means
The IEEE assigned the MA-L block D85DEF to Busch-Jaeger Elektro GmbH. 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 D8:5D:EF, it is Busch-Jaeger Elektro GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix D85DEF?
D85DEF is registered to Busch-Jaeger Elektro GmbH 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. Busch-Jaeger Elektro GmbH's block covers 16,777,216 addresses.
What devices use D85DEF?
Any network device with a MAC address starting D8:5D:EF was manufactured by or for Busch-Jaeger Elektro GmbH.