Who owns MAC prefix 70B3D5D5E?

70B3D5D5E is registered to Barcelona Smart Technologies in the IEEE MA-S registry.

What devices use 70B3D5D5E?

Any network device with a MAC address starting 70:B3:D5:D5:E was manufactured by or for Barcelona Smart Technologies.

MA-S · OUI prefix

Barcelona Smart Technologies

Any MAC address starting 70:B3:D5:D5:E is registered to Barcelona Smart Technologies in ES.

OUI prefix	70B3D5D5E
Vendor	Barcelona Smart Technologies
Registry	MA-S (36-bit, small block)
Country	ES
Example MAC	70:B3:D5:D5:E:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5D5E to Barcelona Smart Technologies. 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:D5:E, it is Barcelona Smart Technologies hardware.

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