What this means
The IEEE assigned the MA-L block 3071B2 to Hangzhou Prevail Optoelectronic Equipment 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 30:71:B2, it is Hangzhou Prevail Optoelectronic Equipment Co.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 3071B2?
3071B2 is registered to Hangzhou Prevail Optoelectronic Equipment 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. Hangzhou Prevail Optoelectronic Equipment Co.,LTD.'s block covers 16,777,216 addresses.
What devices use 3071B2?
Any network device with a MAC address starting 30:71:B2 was manufactured by or for Hangzhou Prevail Optoelectronic Equipment Co.,LTD..