Who owns MAC prefix B40B78?

B40B78 is registered to Brusa Elektronik AG in the IEEE MA-L registry.

What devices use B40B78?

Any network device with a MAC address starting B4:0B:78 was manufactured by or for Brusa Elektronik AG.

MA-L · OUI prefix

Brusa Elektronik AG

Any MAC address starting B4:0B:78 is registered to Brusa Elektronik AG in CH.

OUI prefix	B40B78
Vendor	Brusa Elektronik AG
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	B4:0B:78:00:00:00

What this means

The IEEE assigned the MA-L block B40B78 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:78, it is Brusa Elektronik AG hardware.

Other Brusa Elektronik AG prefixes

Brusa Elektronik AG holds 2 registered blocks in total.

B40B7A

Look up another MAC