What this means
The IEEE assigned the MA-L block 6045BD to Microsoft. 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 60:45:BD, it is Microsoft hardware.
Frequently Asked Questions
Who owns MAC prefix 6045BD?
6045BD is registered to Microsoft 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. Microsoft's block covers 16,777,216 addresses.
What devices use 6045BD?
Any network device with a MAC address starting 60:45:BD was manufactured by or for Microsoft.