Who owns MAC prefix 000C5C?

000C5C is registered to GTN Systems B.V. in the IEEE MA-L registry.

What devices use 000C5C?

Any network device with a MAC address starting 00:0C:5C was manufactured by or for GTN Systems B.V..

MA-L · OUI prefix

GTN Systems B.V.

Any MAC address starting 00:0C:5C is registered to GTN Systems B.V. in NL.

OUI prefix	000C5C
Vendor	GTN Systems B.V.
Registry	MA-L (24-bit, large block)
Country	NL
Example MAC	00:0C:5C:00:00:00

What this means

The IEEE assigned the MA-L block 000C5C to GTN Systems B.V.. 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 00:0C:5C, it is GTN Systems B.V. hardware.

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