Who owns MAC prefix 40A6A4?

40A6A4 is registered to PassivSystems Ltd in the IEEE MA-L registry.

What devices use 40A6A4?

Any network device with a MAC address starting 40:A6:A4 was manufactured by or for PassivSystems Ltd.

MA-L · OUI prefix

PassivSystems Ltd

Any MAC address starting 40:A6:A4 is registered to PassivSystems Ltd.

OUI prefix	40A6A4
Vendor	PassivSystems Ltd
Registry	MA-L (24-bit, large block)
Example MAC	40:A6:A4:00:00:00

What this means

The IEEE assigned the MA-L block 40A6A4 to PassivSystems Ltd. 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 40:A6:A4, it is PassivSystems Ltd hardware.

Look up another MAC