Who owns MAC prefix B04F3C?

B04F3C is registered to Genuine Optics in the IEEE MA-L registry.

What devices use B04F3C?

Any network device with a MAC address starting B0:4F:3C was manufactured by or for Genuine Optics.

MA-L · OUI prefix

Genuine Optics

Any MAC address starting B0:4F:3C is registered to Genuine Optics in US.

OUI prefix	B04F3C
Vendor	Genuine Optics
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	B0:4F:3C:00:00:00

What this means

The IEEE assigned the MA-L block B04F3C to Genuine Optics. 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 B0:4F:3C, it is Genuine Optics hardware.

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