What this means
The IEEE assigned the MA-L block 2C28B7 to Hangzhou Ruiying 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 2C:28:B7, it is Hangzhou Ruiying technology co., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 2C28B7?
2C28B7 is registered to Hangzhou Ruiying 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. Hangzhou Ruiying technology co., LTD's block covers 16,777,216 addresses.
What devices use 2C28B7?
Any network device with a MAC address starting 2C:28:B7 was manufactured by or for Hangzhou Ruiying technology co., LTD.