What this means
The IEEE assigned the MA-L block 00169B to Alstom Transport. 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 00:16:9B, it is Alstom Transport hardware.
Frequently Asked Questions
Who owns MAC prefix 00169B?
00169B is registered to Alstom Transport 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. Alstom Transport's block covers 16,777,216 addresses.
What devices use 00169B?
Any network device with a MAC address starting 00:16:9B was manufactured by or for Alstom Transport.