What this means
The IEEE assigned the MA-L block 0439CB to Qingdao HaierTechnology 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 04:39:CB, it is Qingdao HaierTechnology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 0439CB?
0439CB is registered to Qingdao HaierTechnology 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. Qingdao HaierTechnology Co.,Ltd's block covers 16,777,216 addresses.
What devices use 0439CB?
Any network device with a MAC address starting 04:39:CB was manufactured by or for Qingdao HaierTechnology Co.,Ltd.