Who owns MAC prefix 0040B9?

0040B9 is registered to MACQ ELECTRONIQUE SA in the IEEE MA-L registry.

What devices use 0040B9?

Any network device with a MAC address starting 00:40:B9 was manufactured by or for MACQ ELECTRONIQUE SA.

MA-L · OUI prefix

MACQ ELECTRONIQUE SA

Any MAC address starting 00:40:B9 is registered to MACQ ELECTRONIQUE SA in BE.

OUI prefix	0040B9
Vendor	MACQ ELECTRONIQUE SA
Registry	MA-L (24-bit, large block)
Country	BE
Example MAC	00:40:B9:00:00:00

What this means

The IEEE assigned the MA-L block 0040B9 to MACQ ELECTRONIQUE SA. 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 00:40:B9, it is MACQ ELECTRONIQUE SA hardware.

Look up another MAC