What this means
The IEEE assigned the MA-L block 001B40 to Network Automation mxc AB. 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 00:1B:40, it is Network Automation mxc AB hardware.
Frequently Asked Questions
Who owns MAC prefix 001B40?
001B40 is registered to Network Automation mxc AB 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. Network Automation mxc AB's block covers 16,777,216 addresses.
What devices use 001B40?
Any network device with a MAC address starting 00:1B:40 was manufactured by or for Network Automation mxc AB.