Who owns MAC prefix 00209B?

00209B is registered to ERSAT ELECTRONIC GMBH in the IEEE MA-L registry.

What devices use 00209B?

Any network device with a MAC address starting 00:20:9B was manufactured by or for ERSAT ELECTRONIC GMBH.

MA-L · OUI prefix

ERSAT ELECTRONIC GMBH

Any MAC address starting 00:20:9B is registered to ERSAT ELECTRONIC GMBH in DE.

OUI prefix	00209B
Vendor	ERSAT ELECTRONIC GMBH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:20:9B:00:00:00

What this means

The IEEE assigned the MA-L block 00209B to ERSAT ELECTRONIC 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 00:20:9B, it is ERSAT ELECTRONIC GMBH hardware.

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