Who owns MAC prefix 0012B1?

0012B1 is registered to Dai Nippon Printing Co., Ltd in the IEEE MA-L registry.

What devices use 0012B1?

Any network device with a MAC address starting 00:12:B1 was manufactured by or for Dai Nippon Printing Co., Ltd.

MA-L · OUI prefix

Dai Nippon Printing Co., Ltd

Any MAC address starting 00:12:B1 is registered to Dai Nippon Printing Co., Ltd in JP.

OUI prefix	0012B1
Vendor	Dai Nippon Printing Co., Ltd
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:12:B1:00:00:00

What this means

The IEEE assigned the MA-L block 0012B1 to Dai Nippon Printing 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 00:12:B1, it is Dai Nippon Printing Co., Ltd hardware.

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