MAC prefix 40:D8:55:12:F
| Vendor | Private |
|---|---|
| Prefix | 40:D8:55:12:F/36 |
| Block type | MA-S (/36, 4,096 addresses) |
| Address range | 40:D8:55:12:F0:00 – 40:D8:55:12:FF:FF |
| Notations | 40:D8:55:12:F0:0040-D8-55-12-F0-0040d8.5512.f00040D85512F000 |
Frequently asked questions
Which vendor does MAC address 40:D8:55:12:F belong to?
MAC addresses starting with 40:D8:55:12:F are assigned to Private according to the IEEE registry (prefix length 36 bits).
How many addresses does block 40:D8:55:12:F contain?
The block contains 4,096 addresses from 40:D8:55:12:F0:00 to 40:D8:55:12:FF:FF.
Is 40:D8:55:12:F 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.
Which other MAC prefixes does Private have?
Private holds 240 registered prefixes in total – the full list is on the vendor page.