Who owns MAC prefix B4DD15?

B4DD15 is registered to ControlThings Oy Ab in the IEEE MA-L registry.

What devices use B4DD15?

Any network device with a MAC address starting B4:DD:15 was manufactured by or for ControlThings Oy Ab.

MA-L · OUI prefix

ControlThings Oy Ab

Any MAC address starting B4:DD:15 is registered to ControlThings Oy Ab in FI.

OUI prefix	B4DD15
Vendor	ControlThings Oy Ab
Registry	MA-L (24-bit, large block)
Country	FI
Example MAC	B4:DD:15:00:00:00

What this means

The IEEE assigned the MA-L block B4DD15 to ControlThings Oy Ab. 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 B4:DD:15, it is ControlThings Oy Ab hardware.

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