MAC prefix 08:00:81
Astech Inc.
| Vendor | Astech Inc. |
|---|---|
| Short name | Astech |
| Prefix | 08:00:81/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 08:00:81:00:00:00 – 08:00:81:FF:FF:FF |
| Notations | 08:00:81:00:00:0008-00-81-00-00-000800.8100.0000080081000000 |
Frequently asked questions
Which vendor does MAC address 08:00:81 belong to?
MAC addresses starting with 08:00:81 are assigned to Astech Inc. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 08:00:81 contain?
The block contains 16,777,216 addresses from 08:00:81:00:00:00 to 08:00:81:FF:FF:FF.
Is 08:00:81 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.