What this means
The IEEE assigned the MA-L block D443A8 to Changzhou Haojie Electric 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 D4:43:A8, it is Changzhou Haojie Electric Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix D443A8?
D443A8 is registered to Changzhou Haojie Electric 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. Changzhou Haojie Electric Co., Ltd.'s block covers 16,777,216 addresses.
What devices use D443A8?
Any network device with a MAC address starting D4:43:A8 was manufactured by or for Changzhou Haojie Electric Co., Ltd..