MAC prefix 40:11:75:9
ADH Guardian USA
| Vendor | ADH Guardian USA |
|---|---|
| Short name | ADHGuardianU |
| Prefix | 40:11:75:9/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | 40:11:75:90:00:00 – 40:11:75:9F:FF:FF |
| Notations | 40:11:75:90:00:0040-11-75-90-00-004011.7590.0000401175900000 |
Frequently asked questions
Which vendor does MAC address 40:11:75:9 belong to?
MAC addresses starting with 40:11:75:9 are assigned to ADH Guardian USA according to the IEEE registry (prefix length 28 bits).
How many addresses does block 40:11:75:9 contain?
The block contains 1,048,576 addresses from 40:11:75:90:00:00 to 40:11:75:9F:FF:FF.
Is 40:11:75:9 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.