What this means
The IEEE assigned the MA-L block 644F56 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 64:4F:56, it is YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 644F56?
644F56 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 644F56?
Any network device with a MAC address starting 64:4F:56 was manufactured by or for YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD..