What this means
The IEEE assigned the MA-L block A4DB4C to RAI Institute. 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 A4:DB:4C, it is RAI Institute hardware.
Frequently Asked Questions
Who owns MAC prefix A4DB4C?
A4DB4C is registered to RAI Institute 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. RAI Institute's block covers 16,777,216 addresses.
What devices use A4DB4C?
Any network device with a MAC address starting A4:DB:4C was manufactured by or for RAI Institute.