Who owns MAC prefix 3C3178?

3C3178 is registered to Qolsys Inc. in the IEEE MA-L registry.

What devices use 3C3178?

Any network device with a MAC address starting 3C:31:78 was manufactured by or for Qolsys Inc..

MA-L · OUI prefix

Qolsys Inc.

Any MAC address starting 3C:31:78 is registered to Qolsys Inc. in US.

OUI prefix	3C3178
Vendor	Qolsys Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	3C:31:78:00:00:00

What this means

The IEEE assigned the MA-L block 3C3178 to Qolsys 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 3C:31:78, it is Qolsys Inc. hardware.

Other Qolsys Inc. prefixes

Qolsys Inc. holds 2 registered blocks in total.

18C1E2

Look up another MAC