MAC prefix 20:91:D9
I'M Spa
| Vendor | I'M Spa |
|---|---|
| Short name | IM |
| Prefix | 20:91:D9/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:91:D9:00:00:00 – 20:91:D9:FF:FF:FF |
| Notations | 20:91:D9:00:00:0020-91-D9-00-00-002091.d900.00002091D9000000 |
Frequently asked questions
Which vendor does MAC address 20:91:D9 belong to?
MAC addresses starting with 20:91:D9 are assigned to I'M Spa according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:91:D9 contain?
The block contains 16,777,216 addresses from 20:91:D9:00:00:00 to 20:91:D9:FF:FF:FF.
Is 20:91:D9 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.