MAC prefix 11:11:11
| Vendor | Private |
|---|---|
| Prefix | 11:11:11/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 11:11:11:00:00:00 – 11:11:11:FF:FF:FF |
| Notations | 11:11:11:00:00:0011-11-11-00-00-001111.1100.0000111111000000 |
Frequently asked questions
Which vendor does MAC address 11:11:11 belong to?
MAC addresses starting with 11:11:11 are assigned to Private according to the IEEE registry (prefix length 24 bits).
How many addresses does block 11:11:11 contain?
The block contains 16,777,216 addresses from 11:11:11:00:00:00 to 11:11:11:FF:FF:FF.
Is 11:11:11 a unicast or multicast address?
The least significant bit of the first byte is set – it is a group (multicast) 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.
Which other MAC prefixes does Private have?
Private holds 240 registered prefixes in total – the full list is on the vendor page.