Who owns MAC prefix 40BF17?

40BF17 is registered to Digistar Telecom. SA in the IEEE MA-L registry.

What devices use 40BF17?

Any network device with a MAC address starting 40:BF:17 was manufactured by or for Digistar Telecom. SA.

MA-L · OUI prefix

Digistar Telecom. SA

Any MAC address starting 40:BF:17 is registered to Digistar Telecom. SA in BR.

OUI prefix	40BF17
Vendor	Digistar Telecom. SA
Registry	MA-L (24-bit, large block)
Country	BR
Example MAC	40:BF:17:00:00:00

What this means

The IEEE assigned the MA-L block 40BF17 to Digistar Telecom. 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 40:BF:17, it is Digistar Telecom. SA hardware.

Look up another MAC