What this means
The IEEE assigned the MA-L block C4FC22 to YEALINK(XIAMEN) NETWORK TECHNOLOGY 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 C4:FC:22, it is YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix C4FC22?
C4FC22 is registered to YEALINK(XIAMEN) NETWORK TECHNOLOGY 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. YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD.'s block covers 16,777,216 addresses.
What devices use C4FC22?
Any network device with a MAC address starting C4:FC:22 was manufactured by or for YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD..