What this means
The IEEE assigned the MA-L block 6490C1 to Beijing Xiaomi Mobile Software 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 64:90:C1, it is Beijing Xiaomi Mobile Software Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 6490C1?
6490C1 is registered to Beijing Xiaomi Mobile Software 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. Beijing Xiaomi Mobile Software Co., Ltd's block covers 16,777,216 addresses.
What devices use 6490C1?
Any network device with a MAC address starting 64:90:C1 was manufactured by or for Beijing Xiaomi Mobile Software Co., Ltd.