What this means
The IEEE assigned the MA-M block A43BFA3 to Circus World Displays Ltd. 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 A4:3B:FA:3, it is Circus World Displays Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix A43BFA3?
A43BFA3 is registered to Circus World Displays Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Circus World Displays Ltd's block covers 1,048,576 addresses.
What devices use A43BFA3?
Any network device with a MAC address starting A4:3B:FA:3 was manufactured by or for Circus World Displays Ltd.