Who owns MAC prefix 0090C6?

0090C6 is registered to OPTIM SYSTEMS, INC. in the IEEE MA-L registry.

What devices use 0090C6?

Any network device with a MAC address starting 00:90:C6 was manufactured by or for OPTIM SYSTEMS, INC..

MA-L · OUI prefix

OPTIM SYSTEMS, INC.

Any MAC address starting 00:90:C6 is registered to OPTIM SYSTEMS, INC. in US.

OUI prefix	0090C6
Vendor	OPTIM SYSTEMS, INC.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:90:C6:00:00:00

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.

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