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.
Frequently Asked Questions
Who owns MAC prefix 105C3B?
105C3B is registered to Perma-Pipe, Inc. in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Perma-Pipe, Inc.'s block covers 16,777,216 addresses.
What devices use 105C3B?
Any network device with a MAC address starting 10:5C:3B was manufactured by or for Perma-Pipe, Inc..