What this means
The IEEE assigned the MA-L block 583BC2 to Silicon Laboratories. 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 58:3B:C2, it is Silicon Laboratories hardware.
Frequently Asked Questions
Who owns MAC prefix 583BC2?
583BC2 is registered to Silicon Laboratories 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. Silicon Laboratories's block covers 16,777,216 addresses.
What devices use 583BC2?
Any network device with a MAC address starting 58:3B:C2 was manufactured by or for Silicon Laboratories.