Who owns MAC prefix 00213B?

00213B is registered to Berkshire Products, Inc in the IEEE MA-L registry.

What devices use 00213B?

Any network device with a MAC address starting 00:21:3B was manufactured by or for Berkshire Products, Inc.

MA-L · OUI prefix

Berkshire Products, Inc

Any MAC address starting 00:21:3B is registered to Berkshire Products, Inc in US.

OUI prefix	00213B
Vendor	Berkshire Products, Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:21:3B:00:00:00

What this means

The IEEE assigned the MA-L block 00213B to Berkshire Products, 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 00:21:3B, it is Berkshire Products, Inc hardware.

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