Who owns MAC prefix AC9403?

AC9403 is registered to Envision Peripherals Inc in the IEEE MA-L registry.

What devices use AC9403?

Any network device with a MAC address starting AC:94:03 was manufactured by or for Envision Peripherals Inc.

MA-L · OUI prefix

Envision Peripherals Inc

Any MAC address starting AC:94:03 is registered to Envision Peripherals Inc in US.

OUI prefix	AC9403
Vendor	Envision Peripherals Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	AC:94:03:00:00:00

What this means

The IEEE assigned the MA-L block AC9403 to Envision Peripherals 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 AC:94:03, it is Envision Peripherals Inc hardware.

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