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.
Frequently Asked Questions
Who owns MAC prefix 0012BB?
0012BB is registered to Telecommunications Industry Association TR-41 Committee in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Telecommunications Industry Association TR-41 Committee's block covers 16,777,216 addresses.
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.