What devices use 00120D?

Any network device with a MAC address starting 00:12:0D was manufactured by or for Advanced Telecommunication Technologies, Inc..

MA-L · OUI prefix

Advanced Telecommunication Technologies, Inc.

Q: Who owns MAC prefix 00120D?

00120D is registered to Advanced Telecommunication Technologies, Inc. in the IEEE MA-L registry.

Any MAC address starting 00:12:0D is registered to Advanced Telecommunication Technologies, Inc. in US.

OUI prefix	00120D
Vendor	Advanced Telecommunication Technologies, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:12:0D:00:00:00

What this means

The IEEE assigned the MA-L block 00120D to Advanced Telecommunication Technologies, Inc.. 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 00:12:0D, it is Advanced Telecommunication Technologies, Inc. hardware.

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