MAC prefix 14:81:21
TOP WING Corporation
| Vendor | TOP WING Corporation |
|---|---|
| Short name | TOPWING |
| Prefix | 14:81:21/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 14:81:21:00:00:00 – 14:81:21:FF:FF:FF |
| Notations | 14:81:21:00:00:0014-81-21-00-00-001481.2100.0000148121000000 |
Frequently asked questions
Which vendor does MAC address 14:81:21 belong to?
MAC addresses starting with 14:81:21 are assigned to TOP WING Corporation according to the IEEE registry (prefix length 24 bits).
How many addresses does block 14:81:21 contain?
The block contains 16,777,216 addresses from 14:81:21:00:00:00 to 14:81:21:FF:FF:FF.
Is 14:81:21 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.