Who owns MAC prefix 789F87?

789F87 is registered to Siemens AG I IA PP PRM in the IEEE MA-L registry.

What devices use 789F87?

Any network device with a MAC address starting 78:9F:87 was manufactured by or for Siemens AG I IA PP PRM.

MA-L · OUI prefix

Siemens AG I IA PP PRM

Any MAC address starting 78:9F:87 is registered to Siemens AG I IA PP PRM in DE.

OUI prefix	789F87
Vendor	Siemens AG I IA PP PRM
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	78:9F:87:00:00:00

What this means

The IEEE assigned the MA-L block 789F87 to Siemens AG I IA PP PRM. 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 78:9F:87, it is Siemens AG I IA PP PRM hardware.

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