MAC prefix 04:19:7F
Grasphere Japan
| Vendor | Grasphere Japan |
|---|---|
| Short name | GrasphereJap |
| Prefix | 04:19:7F/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 04:19:7F:00:00:00 – 04:19:7F:FF:FF:FF |
| Notations | 04:19:7F:00:00:0004-19-7F-00-00-000419.7f00.000004197F000000 |
Frequently asked questions
Which vendor does MAC address 04:19:7F belong to?
MAC addresses starting with 04:19:7F are assigned to Grasphere Japan according to the IEEE registry (prefix length 24 bits).
How many addresses does block 04:19:7F contain?
The block contains 16,777,216 addresses from 04:19:7F:00:00:00 to 04:19:7F:FF:FF:FF.
Is 04:19:7F 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.