What this means
The IEEE assigned the MA-M block D016F09 to Crystal Alarm AB. 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 D0:16:F0:9, it is Crystal Alarm AB hardware.
Frequently Asked Questions
Who owns MAC prefix D016F09?
D016F09 is registered to Crystal Alarm AB in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Crystal Alarm AB's block covers 1,048,576 addresses.
What devices use D016F09?
Any network device with a MAC address starting D0:16:F0:9 was manufactured by or for Crystal Alarm AB.