MAC prefix 90:9F:33
| Vendor | EFM Networks |
|---|---|
| Short name | EFMNetworks |
| Prefix | 90:9F:33/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 90:9F:33:00:00:00 – 90:9F:33:FF:FF:FF |
| Notations | 90:9F:33:00:00:0090-9F-33-00-00-00909f.3300.0000909F33000000 |
Frequently asked questions
Which vendor does MAC address 90:9F:33 belong to?
MAC addresses starting with 90:9F:33 are assigned to EFM Networks according to the IEEE registry (prefix length 24 bits).
How many addresses does block 90:9F:33 contain?
The block contains 16,777,216 addresses from 90:9F:33:00:00:00 to 90:9F:33:FF:FF:FF.
Is 90:9F:33 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 EFM Networks have?
EFM Networks holds 8 registered prefixes in total – the full list is on the vendor page.