MAC prefix 54:91:E1
Vitalacy Inc.
| Vendor | Vitalacy Inc. |
|---|---|
| Short name | Vitalacy |
| Prefix | 54:91:E1/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 54:91:E1:00:00:00 – 54:91:E1:FF:FF:FF |
| Notations | 54:91:E1:00:00:0054-91-E1-00-00-005491.e100.00005491E1000000 |
Frequently asked questions
Which vendor does MAC address 54:91:E1 belong to?
MAC addresses starting with 54:91:E1 are assigned to Vitalacy Inc. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 54:91:E1 contain?
The block contains 16,777,216 addresses from 54:91:E1:00:00:00 to 54:91:E1:FF:FF:FF.
Is 54:91:E1 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.