What this means
The IEEE assigned the MA-L block 48221D to Bose Corporation. 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 48:22:1D, it is Bose Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 48221D?
48221D is registered to Bose Corporation 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. Bose Corporation's block covers 16,777,216 addresses.
What devices use 48221D?
Any network device with a MAC address starting 48:22:1D was manufactured by or for Bose Corporation.