MAC prefix B8:A1:B8
| Vendor | Arista Networks |
|---|---|
| Short name | AristaNetwor |
| Prefix | B8:A1:B8/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | B8:A1:B8:00:00:00 – B8:A1:B8:FF:FF:FF |
| Notations | B8:A1:B8:00:00:00B8-A1-B8-00-00-00b8a1.b800.0000B8A1B8000000 |
Frequently asked questions
Which vendor does MAC address B8:A1:B8 belong to?
MAC addresses starting with B8:A1:B8 are assigned to Arista Networks according to the IEEE registry (prefix length 24 bits).
How many addresses does block B8:A1:B8 contain?
The block contains 16,777,216 addresses from B8:A1:B8:00:00:00 to B8:A1:B8:FF:FF:FF.
Is B8:A1:B8 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 Arista Networks have?
Arista Networks holds 54 registered prefixes in total – the full list is on the vendor page.