MAC prefix 3C:40:15
12mm Health Technology (Hainan) Co., Ltd.
| Vendor | 12mm Health Technology (Hainan) Co., Ltd. |
|---|---|
| Short name | 12mmHealthTe |
| Prefix | 3C:40:15/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 3C:40:15:00:00:00 – 3C:40:15:FF:FF:FF |
| Notations | 3C:40:15:00:00:003C-40-15-00-00-003c40.1500.00003C4015000000 |
Frequently asked questions
Which vendor does MAC address 3C:40:15 belong to?
MAC addresses starting with 3C:40:15 are assigned to 12mm Health Technology (Hainan) Co., Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 3C:40:15 contain?
The block contains 16,777,216 addresses from 3C:40:15:00:00:00 to 3C:40:15:FF:FF:FF.
Is 3C:40:15 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.