What this means
The IEEE assigned the MA-L block DC91BF to Amazon Technologies 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 DC:91:BF, it is Amazon Technologies Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix DC91BF?
DC91BF is registered to Amazon Technologies 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. Amazon Technologies Inc.'s block covers 16,777,216 addresses.
What devices use DC91BF?
Any network device with a MAC address starting DC:91:BF was manufactured by or for Amazon Technologies Inc..