MAC prefix C8:21:DA
Shenzhen YOUHUA Technology Co., Ltd
| Vendor | Shenzhen YOUHUA Technology Co., Ltd |
|---|---|
| Short name | YOUHUATechno |
| Prefix | C8:21:DA/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | C8:21:DA:00:00:00 – C8:21:DA:FF:FF:FF |
| Notations | C8:21:DA:00:00:00C8-21-DA-00-00-00c821.da00.0000C821DA000000 |
Frequently asked questions
Which vendor does MAC address C8:21:DA belong to?
MAC addresses starting with C8:21:DA are assigned to Shenzhen YOUHUA Technology Co., Ltd according to the IEEE registry (prefix length 24 bits).
How many addresses does block C8:21:DA contain?
The block contains 16,777,216 addresses from C8:21:DA:00:00:00 to C8:21:DA:FF:FF:FF.
Is C8:21:DA 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.
Which other MAC prefixes does Shenzhen YOUHUA Technology Co., Ltd have?
Shenzhen YOUHUA Technology Co., Ltd holds 45 registered prefixes in total – the full list is on the vendor page.