What this means
The IEEE assigned the MA-M block 04A16F3 to Crypto4A Technologies. 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 04:A1:6F:3, it is Crypto4A Technologies hardware.
Frequently Asked Questions
Who owns MAC prefix 04A16F3?
04A16F3 is registered to Crypto4A Technologies 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. Crypto4A Technologies's block covers 1,048,576 addresses.
What devices use 04A16F3?
Any network device with a MAC address starting 04:A1:6F:3 was manufactured by or for Crypto4A Technologies.