What this means
The IEEE assigned the MA-M block 643139C to SHEN ZHEN FUCHANG 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 64:31:39:C, it is SHEN ZHEN FUCHANG TECHNOLOGY Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 643139C?
643139C is registered to SHEN ZHEN FUCHANG TECHNOLOGY Co.,Ltd. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. SHEN ZHEN FUCHANG TECHNOLOGY Co.,Ltd.'s block covers 1,048,576 addresses.
What devices use 643139C?
Any network device with a MAC address starting 64:31:39:C was manufactured by or for SHEN ZHEN FUCHANG TECHNOLOGY Co.,Ltd..