Who owns MAC prefix 80427C?

80427C is registered to Adolf Tedsen GmbH & Co. KG in the IEEE MA-L registry.

What devices use 80427C?

Any network device with a MAC address starting 80:42:7C was manufactured by or for Adolf Tedsen GmbH & Co. KG.

MA-L · OUI prefix

Adolf Tedsen GmbH & Co. KG

Any MAC address starting 80:42:7C is registered to Adolf Tedsen GmbH & Co. KG in DE.

OUI prefix	80427C
Vendor	Adolf Tedsen GmbH & Co. KG
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	80:42:7C:00:00:00

What this means

The IEEE assigned the MA-L block 80427C to Adolf Tedsen GmbH & Co. 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 80:42:7C, it is Adolf Tedsen GmbH & Co. KG hardware.

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