What this means
The IEEE assigned the MA-L block B40B7A to Brusa Elektronik AG. 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 B4:0B:7A, it is Brusa Elektronik AG hardware.
Frequently Asked Questions
Who owns MAC prefix B40B7A?
B40B7A is registered to Brusa Elektronik AG 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. Brusa Elektronik AG's block covers 16,777,216 addresses.
What devices use B40B7A?
Any network device with a MAC address starting B4:0B:7A was manufactured by or for Brusa Elektronik AG.