MAC prefix 04:38:DC
China Unicom Online Information Technology Co.,Ltd
| Vendor | China Unicom Online Information Technology Co.,Ltd |
|---|---|
| Short name | ChinaUnicomO |
| Prefix | 04:38:DC/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 04:38:DC:00:00:00 – 04:38:DC:FF:FF:FF |
| Notations | 04:38:DC:00:00:0004-38-DC-00-00-000438.dc00.00000438DC000000 |
Frequently asked questions
Which vendor does MAC address 04:38:DC belong to?
MAC addresses starting with 04:38:DC are assigned to China Unicom Online Information Technology Co.,Ltd according to the IEEE registry (prefix length 24 bits).
How many addresses does block 04:38:DC contain?
The block contains 16,777,216 addresses from 04:38:DC:00:00:00 to 04:38:DC:FF:FF:FF.
Is 04:38:DC 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.