What this means
The IEEE assigned the MA-L block 40EF4C to Fihonest communication co.,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 40:EF:4C, it is Fihonest communication co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 40EF4C?
40EF4C is registered to Fihonest communication co.,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. Fihonest communication co.,Ltd's block covers 16,777,216 addresses.
What devices use 40EF4C?
Any network device with a MAC address starting 40:EF:4C was manufactured by or for Fihonest communication co.,Ltd.