What this means
The IEEE assigned the MA-L block 9CD1D0 to Guangzhou Ronsuo Electronic 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 9C:D1:D0, it is Guangzhou Ronsuo Electronic Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 9CD1D0?
9CD1D0 is registered to Guangzhou Ronsuo Electronic 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. Guangzhou Ronsuo Electronic Technology Co.,Ltd's block covers 16,777,216 addresses.
What devices use 9CD1D0?
Any network device with a MAC address starting 9C:D1:D0 was manufactured by or for Guangzhou Ronsuo Electronic Technology Co.,Ltd.