Who owns MAC prefix 70B3D53F3?

70B3D53F3 is registered to SPEA SPA in the IEEE MA-S registry.

What devices use 70B3D53F3?

Any network device with a MAC address starting 70:B3:D5:3F:3 was manufactured by or for SPEA SPA.

MA-S · OUI prefix

SPEA SPA

Any MAC address starting 70:B3:D5:3F:3 is registered to SPEA SPA in IT.

OUI prefix	70B3D53F3
Vendor	SPEA SPA
Registry	MA-S (36-bit, small block)
Country	IT
Example MAC	70:B3:D5:3F:3:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D53F3 to SPEA SPA. 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:D5:3F:3, it is SPEA SPA hardware.

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