Who owns MAC prefix 00239F?

00239F is registered to Institut für Prüftechnik in the IEEE MA-L registry.

What devices use 00239F?

Any network device with a MAC address starting 00:23:9F was manufactured by or for Institut für Prüftechnik.

MA-L · OUI prefix

Institut für Prüftechnik

Any MAC address starting 00:23:9F is registered to Institut für Prüftechnik in DE.

OUI prefix	00239F
Vendor	Institut für Prüftechnik
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:23:9F:00:00:00

What this means

The IEEE assigned the MA-L block 00239F to Institut für Prüftechnik. 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 00:23:9F, it is Institut für Prüftechnik hardware.

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