MAC prefix B4:37:D1:2
Fibersystem AB
| Vendor | Fibersystem AB |
|---|---|
| Short name | Fibersystem |
| Prefix | B4:37:D1:2/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | B4:37:D1:20:00:00 – B4:37:D1:2F:FF:FF |
| Notations | B4:37:D1:20:00:00B4-37-D1-20-00-00b437.d120.0000B437D1200000 |
Frequently asked questions
Which vendor does MAC address B4:37:D1:2 belong to?
MAC addresses starting with B4:37:D1:2 are assigned to Fibersystem AB according to the IEEE registry (prefix length 28 bits).
How many addresses does block B4:37:D1:2 contain?
The block contains 1,048,576 addresses from B4:37:D1:20:00:00 to B4:37:D1:2F:FF:FF.
Is B4:37:D1:2 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.