Who owns MAC prefix 0009E5?

0009E5 is registered to Hottinger Brüel & Kjaer GmbH in the IEEE MA-L registry.

What devices use 0009E5?

Any network device with a MAC address starting 00:09:E5 was manufactured by or for Hottinger Brüel & Kjaer GmbH.

MA-L · OUI prefix

Hottinger Brüel & Kjaer GmbH

Any MAC address starting 00:09:E5 is registered to Hottinger Brüel & Kjaer GmbH in DE.

OUI prefix	0009E5
Vendor	Hottinger Brüel & Kjaer GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:09:E5:00:00:00

What this means

The IEEE assigned the MA-L block 0009E5 to Hottinger Brüel & Kjaer 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 00:09:E5, it is Hottinger Brüel & Kjaer GmbH hardware.

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