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.
Frequently Asked Questions
Who owns MAC prefix 0040DE?
0040DE is registered to Elsag Datamat spa in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Elsag Datamat spa's block covers 16,777,216 addresses.
What devices use 0040DE?
Any network device with a MAC address starting 00:40:DE was manufactured by or for Elsag Datamat spa.