MAC prefix B4:B1:5A
Siemens AG Energy Management Division
| Vendor | Siemens AG Energy Management Division |
|---|---|
| Short name | SiemensEnerg |
| Prefix | B4:B1:5A/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | B4:B1:5A:00:00:00 – B4:B1:5A:FF:FF:FF |
| Notations | B4:B1:5A:00:00:00B4-B1-5A-00-00-00b4b1.5a00.0000B4B15A000000 |
Frequently asked questions
Which vendor does MAC address B4:B1:5A belong to?
MAC addresses starting with B4:B1:5A are assigned to Siemens AG Energy Management Division according to the IEEE registry (prefix length 24 bits).
How many addresses does block B4:B1:5A contain?
The block contains 16,777,216 addresses from B4:B1:5A:00:00:00 to B4:B1:5A:FF:FF:FF.
Is B4:B1:5A 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.