What this means
The IEEE assigned the MA-L block 64557F to NSFOCUS Information 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 64:55:7F, it is NSFOCUS Information Technology Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 64557F?
64557F is registered to NSFOCUS Information 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. NSFOCUS Information Technology Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 64557F?
Any network device with a MAC address starting 64:55:7F was manufactured by or for NSFOCUS Information Technology Co., Ltd..