Who owns MAC prefix 00D055?

00D055 is registered to KATHREIN-WERKE KG in the IEEE MA-L registry.

What devices use 00D055?

Any network device with a MAC address starting 00:D0:55 was manufactured by or for KATHREIN-WERKE KG.

MA-L · OUI prefix

KATHREIN-WERKE KG

Any MAC address starting 00:D0:55 is registered to KATHREIN-WERKE KG in DE.

OUI prefix	00D055
Vendor	KATHREIN-WERKE KG
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:D0:55:00:00:00

What this means

The IEEE assigned the MA-L block 00D055 to KATHREIN-WERKE KG. 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:D0:55, it is KATHREIN-WERKE KG hardware.

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