MAC prefix 30:21:5B
Shenzhen Ostar Display Electronic Co.,Ltd
| Vendor | Shenzhen Ostar Display Electronic Co.,Ltd |
|---|---|
| Short name | OstarDisplay |
| Prefix | 30:21:5B/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 30:21:5B:00:00:00 – 30:21:5B:FF:FF:FF |
| Notations | 30:21:5B:00:00:0030-21-5B-00-00-003021.5b00.000030215B000000 |
Frequently asked questions
Which vendor does MAC address 30:21:5B belong to?
MAC addresses starting with 30:21:5B are assigned to Shenzhen Ostar Display Electronic Co.,Ltd according to the IEEE registry (prefix length 24 bits).
How many addresses does block 30:21:5B contain?
The block contains 16,777,216 addresses from 30:21:5B:00:00:00 to 30:21:5B:FF:FF:FF.
Is 30:21:5B a unicast or multicast address?
The least significant bit of the first byte is 0 – it is a unicast address. The U/L bit is 0, so the address is globally unique (universally administered).
How do I find the MAC address of my device?
On Linux use ip link, on Windows getmac /v or ipconfig /all, on macOS ifconfig. Note: phones and recent operating systems often use random, locally administered addresses on Wi-Fi.