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.
Frequently Asked Questions
Who owns MAC prefix AC9403?
AC9403 is registered to Envision Peripherals Inc in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Envision Peripherals Inc's block covers 16,777,216 addresses.
What devices use AC9403?
Any network device with a MAC address starting AC:94:03 was manufactured by or for Envision Peripherals Inc.