What this means
The IEEE assigned the MA-L block 40E3D6 to Hewlett Packard Enterprise. 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:E3:D6, it is Hewlett Packard Enterprise hardware.
Frequently Asked Questions
Who owns MAC prefix 40E3D6?
40E3D6 is registered to Hewlett Packard Enterprise 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. Hewlett Packard Enterprise's block covers 16,777,216 addresses.
What devices use 40E3D6?
Any network device with a MAC address starting 40:E3:D6 was manufactured by or for Hewlett Packard Enterprise.