Who owns MAC prefix C43A9F?

C43A9F is registered to Siconix Inc. in the IEEE MA-L registry.

What devices use C43A9F?

Any network device with a MAC address starting C4:3A:9F was manufactured by or for Siconix Inc..

MA-L · OUI prefix

Siconix Inc.

Any MAC address starting C4:3A:9F is registered to Siconix Inc..

OUI prefix	C43A9F
Vendor	Siconix Inc.
Registry	MA-L (24-bit, large block)
Example MAC	C4:3A:9F:00:00:00

What this means

The IEEE assigned the MA-L block C43A9F to Siconix 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 C4:3A:9F, it is Siconix Inc. hardware.

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