What this means
The IEEE assigned the MA-L block D420B0 to Mist Systems, Inc.. 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 D4:20:B0, it is Mist Systems, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix D420B0?
D420B0 is registered to Mist Systems, Inc. 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. Mist Systems, Inc.'s block covers 16,777,216 addresses.
What devices use D420B0?
Any network device with a MAC address starting D4:20:B0 was manufactured by or for Mist Systems, Inc..