Who owns MAC prefix A43BFA3?

A43BFA3 is registered to Circus World Displays Ltd in the IEEE MA-M registry.

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.

MA-M · OUI prefix

Circus World Displays Ltd

Any MAC address starting A4:3B:FA:3 is registered to Circus World Displays Ltd.

OUI prefix	A43BFA3
Vendor	Circus World Displays Ltd
Registry	MA-M (28-bit, medium block)
Example MAC	A4:3B:FA:3:00:00:00

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.

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