Who owns MAC prefix 00012B?

00012B is registered to TELENET Co., Ltd. in the IEEE MA-L registry.

What devices use 00012B?

Any network device with a MAC address starting 00:01:2B was manufactured by or for TELENET Co., Ltd..

MA-L · OUI prefix

TELENET Co., Ltd.

Any MAC address starting 00:01:2B is registered to TELENET Co., Ltd..

OUI prefix	00012B
Vendor	TELENET Co., Ltd.
Registry	MA-L (24-bit, large block)
Example MAC	00:01:2B:00:00:00

What this means

The IEEE assigned the MA-L block 00012B to TELENET 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 00:01:2B, it is TELENET Co., Ltd. hardware.

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