Who owns MAC prefix B43E3B?

B43E3B is registered to Viableware, Inc in the IEEE MA-L registry.

What devices use B43E3B?

Any network device with a MAC address starting B4:3E:3B was manufactured by or for Viableware, Inc.

MA-L · OUI prefix

Viableware, Inc

Any MAC address starting B4:3E:3B is registered to Viableware, Inc in US.

OUI prefix	B43E3B
Vendor	Viableware, Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	B4:3E:3B:00:00:00

What this means

The IEEE assigned the MA-L block B43E3B to Viableware, 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 B4:3E:3B, it is Viableware, Inc hardware.

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