MAC prefix E4:6C:21
messMa GmbH
| Vendor | messMa GmbH |
|---|---|
| Short name | messMa |
| Prefix | E4:6C:21/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | E4:6C:21:00:00:00 – E4:6C:21:FF:FF:FF |
| Notations | E4:6C:21:00:00:00E4-6C-21-00-00-00e46c.2100.0000E46C21000000 |
Frequently asked questions
Which vendor does MAC address E4:6C:21 belong to?
MAC addresses starting with E4:6C:21 are assigned to messMa GmbH according to the IEEE registry (prefix length 24 bits).
How many addresses does block E4:6C:21 contain?
The block contains 16,777,216 addresses from E4:6C:21:00:00:00 to E4:6C:21:FF:FF:FF.
Is E4:6C:21 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.