What this means
The IEEE assigned the MA-L block B46921 to Intel Corporate. 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 B4:69:21, it is Intel Corporate hardware.
Frequently Asked Questions
Who owns MAC prefix B46921?
B46921 is registered to Intel Corporate 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. Intel Corporate's block covers 16,777,216 addresses.
What devices use B46921?
Any network device with a MAC address starting B4:69:21 was manufactured by or for Intel Corporate.