MAC prefix B4:3A:45
| Vendor | Espressif Inc. |
|---|---|
| Short name | Espressif |
| Prefix | B4:3A:45/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | B4:3A:45:00:00:00 – B4:3A:45:FF:FF:FF |
| Notations | B4:3A:45:00:00:00B4-3A-45-00-00-00b43a.4500.0000B43A45000000 |
Frequently asked questions
Which vendor does MAC address B4:3A:45 belong to?
MAC addresses starting with B4:3A:45 are assigned to Espressif Inc. according to the IEEE registry (prefix length 24 bits).
How many addresses does block B4:3A:45 contain?
The block contains 16,777,216 addresses from B4:3A:45:00:00:00 to B4:3A:45:FF:FF:FF.
Is B4:3A:45 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 Espressif Inc. have?
Espressif Inc. holds 355 registered prefixes in total – the full list is on the vendor page.