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