What this means
The IEEE assigned the MA-L block B80B9D to ROPEX Industrie-Elektronik 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 B8:0B:9D, it is ROPEX Industrie-Elektronik GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix B80B9D?
B80B9D is registered to ROPEX Industrie-Elektronik 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. ROPEX Industrie-Elektronik GmbH's block covers 16,777,216 addresses.
What devices use B80B9D?
Any network device with a MAC address starting B8:0B:9D was manufactured by or for ROPEX Industrie-Elektronik GmbH.