Who owns MAC prefix 00120F?

00120F is registered to IEEE 802.3 in the IEEE MA-L registry.

What devices use 00120F?

Any network device with a MAC address starting 00:12:0F was manufactured by or for IEEE 802.3.

MA-L · OUI prefix

IEEE 802.3

Any MAC address starting 00:12:0F is registered to IEEE 802.3.

OUI prefix	00120F
Vendor	IEEE 802.3
Registry	MA-L (24-bit, large block)
Example MAC	00:12:0F:00:00:00

What this means

The IEEE assigned the MA-L block 00120F to IEEE 802.3. 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 00:12:0F, it is IEEE 802.3 hardware.

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