Who owns MAC prefix 90DAF9?

90DAF9 is registered to Siemens Rail Automation SAU in the IEEE MA-L registry.

What devices use 90DAF9?

Any network device with a MAC address starting 90:DA:F9 was manufactured by or for Siemens Rail Automation SAU.

MA-L · OUI prefix

Siemens Rail Automation SAU

Any MAC address starting 90:DA:F9 is registered to Siemens Rail Automation SAU in ES.

OUI prefix	90DAF9
Vendor	Siemens Rail Automation SAU
Registry	MA-L (24-bit, large block)
Country	ES
Example MAC	90:DA:F9:00:00:00

What this means

The IEEE assigned the MA-L block 90DAF9 to Siemens Rail Automation SAU. 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 90:DA:F9, it is Siemens Rail Automation SAU hardware.

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