MAC prefix D4:7C:44:B
OPTiM Corporation
| Vendor | OPTiM Corporation |
|---|---|
| Short name | OPTiM |
| Prefix | D4:7C:44:B/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | D4:7C:44:B0:00:00 – D4:7C:44:BF:FF:FF |
| Notations | D4:7C:44:B0:00:00D4-7C-44-B0-00-00d47c.44b0.0000D47C44B00000 |
Frequently asked questions
Which vendor does MAC address D4:7C:44:B belong to?
MAC addresses starting with D4:7C:44:B are assigned to OPTiM Corporation according to the IEEE registry (prefix length 28 bits).
How many addresses does block D4:7C:44:B contain?
The block contains 1,048,576 addresses from D4:7C:44:B0:00:00 to D4:7C:44:BF:FF:FF.
Is D4:7C:44:B 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.