What this means
The IEEE assigned the MA-L block D85C11 to Optiview USA. 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 D8:5C:11, it is Optiview USA hardware.
Frequently Asked Questions
Who owns MAC prefix D85C11?
D85C11 is registered to Optiview USA 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. Optiview USA's block covers 16,777,216 addresses.
What devices use D85C11?
Any network device with a MAC address starting D8:5C:11 was manufactured by or for Optiview USA.