What this means
The IEEE assigned the MA-L block 0090C6 to OPTIM SYSTEMS, 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 00:90:C6, it is OPTIM SYSTEMS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 0090C6?
0090C6 is registered to OPTIM SYSTEMS, 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. OPTIM SYSTEMS, INC.'s block covers 16,777,216 addresses.
What devices use 0090C6?
Any network device with a MAC address starting 00:90:C6 was manufactured by or for OPTIM SYSTEMS, INC..