What this means
The IEEE assigned the MA-L block D412BB to Quadrant Components Inc. Ltd. 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 D4:12:BB, it is Quadrant Components Inc. Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix D412BB?
D412BB is registered to Quadrant Components Inc. Ltd 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. Quadrant Components Inc. Ltd's block covers 16,777,216 addresses.
What devices use D412BB?
Any network device with a MAC address starting D4:12:BB was manufactured by or for Quadrant Components Inc. Ltd.