What this means
The IEEE assigned the MA-L block 58BC8F to Cognitive Systems Corp.. 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:BC:8F, it is Cognitive Systems Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 58BC8F?
58BC8F is registered to Cognitive Systems Corp. 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. Cognitive Systems Corp.'s block covers 16,777,216 addresses.
What devices use 58BC8F?
Any network device with a MAC address starting 58:BC:8F was manufactured by or for Cognitive Systems Corp..