MAC prefix 90:4E:91:7
| Vendor | Ibm |
|---|---|
| Prefix | 90:4E:91:7/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | 90:4E:91:70:00:00 – 90:4E:91:7F:FF:FF |
| Notations | 90:4E:91:70:00:0090-4E-91-70-00-00904e.9170.0000904E91700000 |
Frequently asked questions
Which vendor does MAC address 90:4E:91:7 belong to?
MAC addresses starting with 90:4E:91:7 are assigned to Ibm according to the IEEE registry (prefix length 28 bits).
How many addresses does block 90:4E:91:7 contain?
The block contains 1,048,576 addresses from 90:4E:91:70:00:00 to 90:4E:91:7F:FF:FF.
Is 90:4E:91:7 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 Ibm have?
Ibm holds 31 registered prefixes in total – the full list is on the vendor page.