Who owns MAC prefix 943EFD5?

943EFD5 is registered to AM General LLC in the IEEE MA-M registry.

What devices use 943EFD5?

Any network device with a MAC address starting 94:3E:FD:5 was manufactured by or for AM General LLC.

MA-M · OUI prefix

AM General LLC

Any MAC address starting 94:3E:FD:5 is registered to AM General LLC in US.

OUI prefix	943EFD5
Vendor	AM General LLC
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	94:3E:FD:5:00:00:00

What this means

The IEEE assigned the MA-M block 943EFD5 to AM General LLC. 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:5, it is AM General LLC hardware.

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