What this means
The IEEE assigned the MA-L block 9CFBF1 to MESOMATIC GmbH & Co.KG. 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:FB:F1, it is MESOMATIC GmbH & Co.KG hardware.
Frequently Asked Questions
Who owns MAC prefix 9CFBF1?
9CFBF1 is registered to MESOMATIC GmbH & Co.KG 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. MESOMATIC GmbH & Co.KG's block covers 16,777,216 addresses.
What devices use 9CFBF1?
Any network device with a MAC address starting 9C:FB:F1 was manufactured by or for MESOMATIC GmbH & Co.KG.