What this means
The IEEE assigned the MA-L block D44BB6 to Zhejiang Tmall 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 D4:4B:B6, it is Zhejiang Tmall Technology Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix D44BB6?
D44BB6 is registered to Zhejiang Tmall 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. Zhejiang Tmall Technology Co., Ltd.'s block covers 16,777,216 addresses.
What devices use D44BB6?
Any network device with a MAC address starting D4:4B:B6 was manufactured by or for Zhejiang Tmall Technology Co., Ltd..