MAC prefix B0:1F:81:A
Steffens Systems GmbH
| Vendor | Steffens Systems GmbH |
|---|---|
| Short name | Steffens |
| Prefix | B0:1F:81:A/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | B0:1F:81:A0:00:00 – B0:1F:81:AF:FF:FF |
| Notations | B0:1F:81:A0:00:00B0-1F-81-A0-00-00b01f.81a0.0000B01F81A00000 |
Frequently asked questions
Which vendor does MAC address B0:1F:81:A belong to?
MAC addresses starting with B0:1F:81:A are assigned to Steffens Systems GmbH according to the IEEE registry (prefix length 28 bits).
How many addresses does block B0:1F:81:A contain?
The block contains 1,048,576 addresses from B0:1F:81:A0:00:00 to B0:1F:81:AF:FF:FF.
Is B0:1F:81:A 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.