MAC prefix 78:57:B0
| Vendor | Gertec Brasil Ltda |
|---|---|
| Short name | GertecBrasil |
| Prefix | 78:57:B0/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 78:57:B0:00:00:00 – 78:57:B0:FF:FF:FF |
| Notations | 78:57:B0:00:00:0078-57-B0-00-00-007857.b000.00007857B0000000 |
Frequently asked questions
Which vendor does MAC address 78:57:B0 belong to?
MAC addresses starting with 78:57:B0 are assigned to Gertec Brasil Ltda according to the IEEE registry (prefix length 24 bits).
How many addresses does block 78:57:B0 contain?
The block contains 16,777,216 addresses from 78:57:B0:00:00:00 to 78:57:B0:FF:FF:FF.
Is 78:57:B0 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 Gertec Brasil Ltda have?
Gertec Brasil Ltda holds 2 registered prefixes in total – the full list is on the vendor page.