What this means
The IEEE assigned the MA-L block 30215B to Shenzhen Ostar Display Electronic 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 30:21:5B, it is Shenzhen Ostar Display Electronic Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 30215B?
30215B is registered to Shenzhen Ostar Display Electronic 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. Shenzhen Ostar Display Electronic Co.,Ltd's block covers 16,777,216 addresses.
What devices use 30215B?
Any network device with a MAC address starting 30:21:5B was manufactured by or for Shenzhen Ostar Display Electronic Co.,Ltd.