What this means
The IEEE assigned the MA-L block 1C1A1B to Shanghai Sunmi 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 1C:1A:1B, it is Shanghai Sunmi Technology Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 1C1A1B?
1C1A1B is registered to Shanghai Sunmi 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. Shanghai Sunmi Technology Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use 1C1A1B?
Any network device with a MAC address starting 1C:1A:1B was manufactured by or for Shanghai Sunmi Technology Co.,Ltd..