Who owns MAC prefix CCB55A?

CCB55A is registered to Fraunhofer ITWM in the IEEE MA-L registry.

What devices use CCB55A?

Any network device with a MAC address starting CC:B5:5A was manufactured by or for Fraunhofer ITWM.

MA-L · OUI prefix

Fraunhofer ITWM

Any MAC address starting CC:B5:5A is registered to Fraunhofer ITWM in DE.

OUI prefix	CCB55A
Vendor	Fraunhofer ITWM
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	CC:B5:5A:00:00:00

What this means

The IEEE assigned the MA-L block CCB55A to Fraunhofer ITWM. 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 CC:B5:5A, it is Fraunhofer ITWM hardware.

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