Who owns MAC prefix 70B3D5643?

70B3D5643 is registered to Marques,S.A. in the IEEE MA-S registry.

What devices use 70B3D5643?

Any network device with a MAC address starting 70:B3:D5:64:3 was manufactured by or for Marques,S.A..

MA-S · OUI prefix

Marques,S.A.

Any MAC address starting 70:B3:D5:64:3 is registered to Marques,S.A. in PT.

OUI prefix	70B3D5643
Vendor	Marques,S.A.
Registry	MA-S (36-bit, small block)
Country	PT
Example MAC	70:B3:D5:64:3:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5643 to Marques,S.A.. 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:D5:64:3, it is Marques,S.A. hardware.

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