Who owns MAC prefix 70B3D57B2?

70B3D57B2 is registered to Rail Power Systems GmbH in the IEEE MA-S registry.

What devices use 70B3D57B2?

Any network device with a MAC address starting 70:B3:D5:7B:2 was manufactured by or for Rail Power Systems GmbH.

MA-S · OUI prefix

Rail Power Systems GmbH

Any MAC address starting 70:B3:D5:7B:2 is registered to Rail Power Systems GmbH in DE.

OUI prefix	70B3D57B2
Vendor	Rail Power Systems GmbH
Registry	MA-S (36-bit, small block)
Country	DE
Example MAC	70:B3:D5:7B:2:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D57B2 to Rail Power Systems 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 70:B3:D5:7B:2, it is Rail Power Systems GmbH hardware.

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