What this means
The IEEE assigned the MA-M block 4C74A7C to N3com. 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 4C:74:A7:C, it is N3com hardware.
Frequently Asked Questions
Who owns MAC prefix 4C74A7C?
4C74A7C is registered to N3com 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. N3com's block covers 1,048,576 addresses.
What devices use 4C74A7C?
Any network device with a MAC address starting 4C:74:A7:C was manufactured by or for N3com.