Who owns MAC prefix 0026DC?

0026DC is registered to Optical Systems Design in the IEEE MA-L registry.

What devices use 0026DC?

Any network device with a MAC address starting 00:26:DC was manufactured by or for Optical Systems Design.

MA-L · OUI prefix

Optical Systems Design

Any MAC address starting 00:26:DC is registered to Optical Systems Design in AU.

OUI prefix	0026DC
Vendor	Optical Systems Design
Registry	MA-L (24-bit, large block)
Country	AU
Example MAC	00:26:DC:00:00:00

What this means

The IEEE assigned the MA-L block 0026DC to Optical Systems Design. 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 00:26:DC, it is Optical Systems Design hardware.

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