What this means
The IEEE assigned the MA-L block 405FBE to RIM. 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 40:5F:BE, it is RIM hardware.
Frequently Asked Questions
Who owns MAC prefix 405FBE?
405FBE is registered to RIM 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. RIM's block covers 16,777,216 addresses.
What devices use 405FBE?
Any network device with a MAC address starting 40:5F:BE was manufactured by or for RIM.