What this means
The IEEE assigned the MA-M block C4A10EC to Focus-on. 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 C4:A1:0E:C, it is Focus-on hardware.
Frequently Asked Questions
Who owns MAC prefix C4A10EC?
C4A10EC is registered to Focus-on 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. Focus-on's block covers 1,048,576 addresses.
What devices use C4A10EC?
Any network device with a MAC address starting C4:A1:0E:C was manufactured by or for Focus-on.