MAC prefix 74:91:BD
Four systems Co.,Ltd.
| Vendor | Four systems Co.,Ltd. |
|---|---|
| Short name | Four |
| Prefix | 74:91:BD/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 74:91:BD:00:00:00 – 74:91:BD:FF:FF:FF |
| Notations | 74:91:BD:00:00:0074-91-BD-00-00-007491.bd00.00007491BD000000 |
Frequently asked questions
Which vendor does MAC address 74:91:BD belong to?
MAC addresses starting with 74:91:BD are assigned to Four systems Co.,Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 74:91:BD contain?
The block contains 16,777,216 addresses from 74:91:BD:00:00:00 to 74:91:BD:FF:FF:FF.
Is 74:91:BD 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.