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