Who owns MAC prefix 0012B7?

0012B7 is registered to PTW Freiburg in the IEEE MA-L registry.

What devices use 0012B7?

Any network device with a MAC address starting 00:12:B7 was manufactured by or for PTW Freiburg.

MA-L · OUI prefix

PTW Freiburg

Any MAC address starting 00:12:B7 is registered to PTW Freiburg in DE.

OUI prefix	0012B7
Vendor	PTW Freiburg
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:12:B7:00:00:00

What this means

The IEEE assigned the MA-L block 0012B7 to PTW Freiburg. 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 00:12:B7, it is PTW Freiburg hardware.

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