What this means
The IEEE assigned the MA-L block 643172 to ZHEJIANG HISING 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 64:31:72, it is ZHEJIANG HISING TECHNOLOGY CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 643172?
643172 is registered to ZHEJIANG HISING 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. ZHEJIANG HISING TECHNOLOGY CO.,LTD's block covers 16,777,216 addresses.
What devices use 643172?
Any network device with a MAC address starting 64:31:72 was manufactured by or for ZHEJIANG HISING TECHNOLOGY CO.,LTD.