Who owns MAC prefix 70B3D51F3?

70B3D51F3 is registered to Smart Energy Code Company Limited in the IEEE MA-S registry.

What devices use 70B3D51F3?

Any network device with a MAC address starting 70:B3:D5:1F:3 was manufactured by or for Smart Energy Code Company Limited.

MA-S · OUI prefix

Smart Energy Code Company Limited

Any MAC address starting 70:B3:D5:1F:3 is registered to Smart Energy Code Company Limited.

OUI prefix	70B3D51F3
Vendor	Smart Energy Code Company Limited
Registry	MA-S (36-bit, small block)
Example MAC	70:B3:D5:1F:3:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D51F3 to Smart Energy Code Company Limited. 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:D5:1F:3, it is Smart Energy Code Company Limited hardware.

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