MAC prefix 20:B3:7F:3
QT medical inc
| Vendor | QT medical inc |
|---|---|
| Short name | QTmedical |
| Prefix | 20:B3:7F:3/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | 20:B3:7F:30:00:00 – 20:B3:7F:3F:FF:FF |
| Notations | 20:B3:7F:30:00:0020-B3-7F-30-00-0020b3.7f30.000020B37F300000 |
Frequently asked questions
Which vendor does MAC address 20:B3:7F:3 belong to?
MAC addresses starting with 20:B3:7F:3 are assigned to QT medical inc according to the IEEE registry (prefix length 28 bits).
How many addresses does block 20:B3:7F:3 contain?
The block contains 1,048,576 addresses from 20:B3:7F:30:00:00 to 20:B3:7F:3F:FF:FF.
Is 20:B3:7F:3 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.