What this means
The IEEE assigned the MA-L block 0011BD to Bombardier Transportation. 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 00:11:BD, it is Bombardier Transportation hardware.
Frequently Asked Questions
Who owns MAC prefix 0011BD?
0011BD is registered to Bombardier Transportation 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. Bombardier Transportation's block covers 16,777,216 addresses.
What devices use 0011BD?
Any network device with a MAC address starting 00:11:BD was manufactured by or for Bombardier Transportation.