MAC prefix 78:91:DE
Guangdong ACIGA Science&Technology Co.,Ltd
| Vendor | Guangdong ACIGA Science&Technology Co.,Ltd |
|---|---|
| Short name | ACIGAScience |
| Prefix | 78:91:DE/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 78:91:DE:00:00:00 – 78:91:DE:FF:FF:FF |
| Notations | 78:91:DE:00:00:0078-91-DE-00-00-007891.de00.00007891DE000000 |
Frequently asked questions
Which vendor does MAC address 78:91:DE belong to?
MAC addresses starting with 78:91:DE are assigned to Guangdong ACIGA Science&Technology Co.,Ltd according to the IEEE registry (prefix length 24 bits).
How many addresses does block 78:91:DE contain?
The block contains 16,777,216 addresses from 78:91:DE:00:00:00 to 78:91:DE:FF:FF:FF.
Is 78:91:DE 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.