What this means
The IEEE assigned the MA-L block D05875 to Active Control Technology Inc.. 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 D0:58:75, it is Active Control Technology Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix D05875?
D05875 is registered to Active Control Technology Inc. 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. Active Control Technology Inc.'s block covers 16,777,216 addresses.
What devices use D05875?
Any network device with a MAC address starting D0:58:75 was manufactured by or for Active Control Technology Inc..