What this means
The IEEE assigned the MA-L block 9C9019 to Beyless. 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 9C:90:19, it is Beyless hardware.
Frequently Asked Questions
Who owns MAC prefix 9C9019?
9C9019 is registered to Beyless 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. Beyless's block covers 16,777,216 addresses.
What devices use 9C9019?
Any network device with a MAC address starting 9C:90:19 was manufactured by or for Beyless.