Who owns MAC prefix C09BF4D?

C09BF4D is registered to The Professional Monitor Company Ltd in the IEEE MA-M registry.

What devices use C09BF4D?

Any network device with a MAC address starting C0:9B:F4:D was manufactured by or for The Professional Monitor Company Ltd.

MA-M · OUI prefix

The Professional Monitor Company Ltd

Any MAC address starting C0:9B:F4:D is registered to The Professional Monitor Company Ltd in GB.

OUI prefix	C09BF4D
Vendor	The Professional Monitor Company Ltd
Registry	MA-M (28-bit, medium block)
Country	GB
Example MAC	C0:9B:F4:D:00:00:00

What this means

The IEEE assigned the MA-M block C09BF4D to The Professional Monitor Company 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 C0:9B:F4:D, it is The Professional Monitor Company Ltd hardware.

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