What this means
The IEEE assigned the MA-S block 8C1F645F4 to Jiangsu Yi Rong Mstar Technology 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 8C:1F:64:5F:4, it is Jiangsu Yi Rong Mstar Technology Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F645F4?
8C1F645F4 is registered to Jiangsu Yi Rong Mstar Technology Ltd. in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Jiangsu Yi Rong Mstar Technology Ltd.'s block covers 4,096 addresses.
What devices use 8C1F645F4?
Any network device with a MAC address starting 8C:1F:64:5F:4 was manufactured by or for Jiangsu Yi Rong Mstar Technology Ltd..