What this means
The IEEE assigned the MA-L block B44C3B to Zhejiang Dahua 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 B4:4C:3B, it is Zhejiang Dahua Technology Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix B44C3B?
B44C3B is registered to Zhejiang Dahua 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 Dahua Technology Co., Ltd.'s block covers 16,777,216 addresses.
What devices use B44C3B?
Any network device with a MAC address starting B4:4C:3B was manufactured by or for Zhejiang Dahua Technology Co., Ltd..