Who owns MAC prefix 201D03?

201D03 is registered to Elatec GmbH in the IEEE MA-L registry.

What devices use 201D03?

Any network device with a MAC address starting 20:1D:03 was manufactured by or for Elatec GmbH.

MA-L · OUI prefix

Elatec GmbH

Any MAC address starting 20:1D:03 is registered to Elatec GmbH in DE.

OUI prefix	201D03
Vendor	Elatec GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	20:1D:03:00:00:00

What this means

The IEEE assigned the MA-L block 201D03 to Elatec GmbH. 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 20:1D:03, it is Elatec GmbH hardware.

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