Who owns MAC prefix 0040DE?

0040DE is registered to Elsag Datamat spa in the IEEE MA-L registry.

What devices use 0040DE?

Any network device with a MAC address starting 00:40:DE was manufactured by or for Elsag Datamat spa.

MA-L · OUI prefix

Elsag Datamat spa

Any MAC address starting 00:40:DE is registered to Elsag Datamat spa in IT.

OUI prefix	0040DE
Vendor	Elsag Datamat spa
Registry	MA-L (24-bit, large block)
Country	IT
Example MAC	00:40:DE:00:00:00

What this means

The IEEE assigned the MA-L block 0040DE to Elsag Datamat spa. 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:DE, it is Elsag Datamat spa hardware.

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