What this means
The IEEE assigned the MA-L block 74AC5F to Qiku Internet Network Scientific (Shenzhen) 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 74:AC:5F, it is Qiku Internet Network Scientific (Shenzhen) Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 74AC5F?
74AC5F is registered to Qiku Internet Network Scientific (Shenzhen) 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. Qiku Internet Network Scientific (Shenzhen) Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 74AC5F?
Any network device with a MAC address starting 74:AC:5F was manufactured by or for Qiku Internet Network Scientific (Shenzhen) Co., Ltd..