Who owns MAC prefix 70B3D51DA?

70B3D51DA is registered to Promess Inc. in the IEEE MA-S registry.

What devices use 70B3D51DA?

Any network device with a MAC address starting 70:B3:D5:1D:A was manufactured by or for Promess Inc..

MA-S · OUI prefix

Promess Inc.

Any MAC address starting 70:B3:D5:1D:A is registered to Promess Inc. in US.

OUI prefix	70B3D51DA
Vendor	Promess Inc.
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:1D:A:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D51DA to Promess Inc.. 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:D5:1D:A, it is Promess Inc. hardware.

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