Who owns MAC prefix 70B3D5A59?

70B3D5A59 is registered to Muuntosähkö Oy - Trafox in the IEEE MA-S registry.

What devices use 70B3D5A59?

Any network device with a MAC address starting 70:B3:D5:A5:9 was manufactured by or for Muuntosähkö Oy - Trafox.

MA-S · OUI prefix

Muuntosähkö Oy - Trafox

Any MAC address starting 70:B3:D5:A5:9 is registered to Muuntosähkö Oy - Trafox in FI.

OUI prefix	70B3D5A59
Vendor	Muuntosähkö Oy - Trafox
Registry	MA-S (36-bit, small block)
Country	FI
Example MAC	70:B3:D5:A5:9:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5A59 to Muuntosähkö Oy - Trafox. 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:A5:9, it is Muuntosähkö Oy - Trafox hardware.

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