MAC prefix 7C:8D:91
Shanghai Hongzhuo Information Technology co.,LTD
| Vendor | Shanghai Hongzhuo Information Technology co.,LTD |
|---|---|
| Short name | HongzhuoInfo |
| Prefix | 7C:8D:91/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 7C:8D:91:00:00:00 – 7C:8D:91:FF:FF:FF |
| Notations | 7C:8D:91:00:00:007C-8D-91-00-00-007c8d.9100.00007C8D91000000 |
Frequently asked questions
Which vendor does MAC address 7C:8D:91 belong to?
MAC addresses starting with 7C:8D:91 are assigned to Shanghai Hongzhuo Information Technology co.,LTD according to the IEEE registry (prefix length 24 bits).
How many addresses does block 7C:8D:91 contain?
The block contains 16,777,216 addresses from 7C:8D:91:00:00:00 to 7C:8D:91:FF:FF:FF.
Is 7C:8D:91 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.