What this means
The IEEE assigned the MA-L block 004016 to ADC - Global Connectivity Solutions Division. 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 00:40:16, it is ADC - Global Connectivity Solutions Division hardware.
Frequently Asked Questions
Who owns MAC prefix 004016?
004016 is registered to ADC - Global Connectivity Solutions Division 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. ADC - Global Connectivity Solutions Division's block covers 16,777,216 addresses.
What devices use 004016?
Any network device with a MAC address starting 00:40:16 was manufactured by or for ADC - Global Connectivity Solutions Division.