MAC prefix E4:81:B3
Shenzhen ACT Industrial Co.,Ltd.
| Vendor | Shenzhen ACT Industrial Co.,Ltd. |
|---|---|
| Short name | ACTIndustria |
| Prefix | E4:81:B3/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | E4:81:B3:00:00:00 – E4:81:B3:FF:FF:FF |
| Notations | E4:81:B3:00:00:00E4-81-B3-00-00-00e481.b300.0000E481B3000000 |
Frequently asked questions
Which vendor does MAC address E4:81:B3 belong to?
MAC addresses starting with E4:81:B3 are assigned to Shenzhen ACT Industrial Co.,Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block E4:81:B3 contain?
The block contains 16,777,216 addresses from E4:81:B3:00:00:00 to E4:81:B3:FF:FF:FF.
Is E4:81:B3 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.