MAC prefix 18:42:1D
| Vendor | Private |
|---|---|
| Prefix | 18:42:1D/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 18:42:1D:00:00:00 – 18:42:1D:FF:FF:FF |
| Notations | 18:42:1D:00:00:0018-42-1D-00-00-001842.1d00.000018421D000000 |
Frequently asked questions
Which vendor does MAC address 18:42:1D belong to?
MAC addresses starting with 18:42:1D are assigned to Private according to the IEEE registry (prefix length 24 bits).
How many addresses does block 18:42:1D contain?
The block contains 16,777,216 addresses from 18:42:1D:00:00:00 to 18:42:1D:FF:FF:FF.
Is 18:42:1D 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.