What devices use 0012BB?

Any network device with a MAC address starting 00:12:BB was manufactured by or for Telecommunications Industry Association TR-41 Committee.

MA-L · OUI prefix

Telecommunications Industry Association TR-41 Committee

Q: Who owns MAC prefix 0012BB?

0012BB is registered to Telecommunications Industry Association TR-41 Committee in the IEEE MA-L registry.

Any MAC address starting 00:12:BB is registered to Telecommunications Industry Association TR-41 Committee in US.

OUI prefix	0012BB
Vendor	Telecommunications Industry Association TR-41 Committee
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:12:BB:00:00:00

What this means

The IEEE assigned the MA-L block 0012BB to Telecommunications Industry Association TR-41 Committee. 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:BB, it is Telecommunications Industry Association TR-41 Committee hardware.

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