Who owns MAC prefix 00205F?

00205F is registered to GAMMADATA COMPUTER GMBH in the IEEE MA-L registry.

What devices use 00205F?

Any network device with a MAC address starting 00:20:5F was manufactured by or for GAMMADATA COMPUTER GMBH.

MA-L · OUI prefix

GAMMADATA COMPUTER GMBH

Any MAC address starting 00:20:5F is registered to GAMMADATA COMPUTER GMBH in DE.

OUI prefix	00205F
Vendor	GAMMADATA COMPUTER GMBH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:20:5F:00:00:00

What this means

The IEEE assigned the MA-L block 00205F to GAMMADATA COMPUTER 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 00:20:5F, it is GAMMADATA COMPUTER GMBH hardware.

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