Who owns MAC prefix 943EFD3?

943EFD3 is registered to Bertin GmbH in the IEEE MA-M registry.

What devices use 943EFD3?

Any network device with a MAC address starting 94:3E:FD:3 was manufactured by or for Bertin GmbH.

MA-M · OUI prefix

Bertin GmbH

Any MAC address starting 94:3E:FD:3 is registered to Bertin GmbH in DE.

OUI prefix	943EFD3
Vendor	Bertin GmbH
Registry	MA-M (28-bit, medium block)
Country	DE
Example MAC	94:3E:FD:3:00:00:00

What this means

The IEEE assigned the MA-M block 943EFD3 to Bertin GmbH. 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 94:3E:FD:3, it is Bertin GmbH hardware.

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