Who owns MAC prefix 105C3B?

105C3B is registered to Perma-Pipe, Inc. in the IEEE MA-L registry.

What devices use 105C3B?

Any network device with a MAC address starting 10:5C:3B was manufactured by or for Perma-Pipe, Inc..

MA-L · OUI prefix

Perma-Pipe, Inc.

Any MAC address starting 10:5C:3B is registered to Perma-Pipe, Inc. in US.

OUI prefix	105C3B
Vendor	Perma-Pipe, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	10:5C:3B:00:00:00

What this means

The IEEE assigned the MA-L block 105C3B to Perma-Pipe, 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 10:5C:3B, it is Perma-Pipe, Inc. hardware.

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