What this means
The IEEE assigned the MA-L block 2C09CB to COBS AB. 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 2C:09:CB, it is COBS AB hardware.
Frequently Asked Questions
Who owns MAC prefix 2C09CB?
2C09CB is registered to COBS AB 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. COBS AB's block covers 16,777,216 addresses.
What devices use 2C09CB?
Any network device with a MAC address starting 2C:09:CB was manufactured by or for COBS AB.