What this means
The IEEE assigned the MA-L block 74C621 to Zhejiang Hite Renewable Energy 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:C6:21, it is Zhejiang Hite Renewable Energy Co.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 74C621?
74C621 is registered to Zhejiang Hite Renewable Energy 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 Hite Renewable Energy Co.,LTD's block covers 16,777,216 addresses.
What devices use 74C621?
Any network device with a MAC address starting 74:C6:21 was manufactured by or for Zhejiang Hite Renewable Energy Co.,LTD.