Who owns MAC prefix 00091F?

00091F is registered to A&D Co., Ltd. in the IEEE MA-L registry.

What devices use 00091F?

Any network device with a MAC address starting 00:09:1F was manufactured by or for A&D Co., Ltd..

MA-L · OUI prefix

A&D Co., Ltd.

Any MAC address starting 00:09:1F is registered to A&D Co., Ltd. in JP.

OUI prefix	00091F
Vendor	A&D Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:09:1F:00:00:00

What this means

The IEEE assigned the MA-L block 00091F to A&D Co., Ltd.. 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 00:09:1F, it is A&D Co., Ltd. hardware.

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