What this means
The IEEE assigned the MA-L block 001C9B to FEIG ELECTRONIC GmbH. 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 00:1C:9B, it is FEIG ELECTRONIC GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 001C9B?
001C9B is registered to FEIG ELECTRONIC GmbH 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. FEIG ELECTRONIC GmbH's block covers 16,777,216 addresses.
What devices use 001C9B?
Any network device with a MAC address starting 00:1C:9B was manufactured by or for FEIG ELECTRONIC GmbH.